Solo Hikari Route

Solo Hikari Route

This is a lone traveler route for Hikari solo in Octopath Traveler II. Money at the end isn't routed tightly, and there's some annoying re-menuing, but the route works, though it's far from optimized.

Worst fights are Assassins, which can take multiple attempts, and Enshrouded King, which is not a guaranteed fight, but both fights are favored to you. Everything else should be scripted/safe though.

Last updated: 4/8/2023
Status: Complete with sample video
Sample Video: https://youtu.be/KJypv4O6Xc4

NOTE: This was routed under 60 FPS, so different FPS runners may need to adapt if they sooner or later encounters.

Future ideas to look into:
- skip more encounters/money, perhaps get Unfinished Tunnels Rev Jam with walking on first pass through and not retrekking Crackridge
- skip Thief/Ensnare and use Show Goes On with defense meat from Dawn market at Beasting Bay or just SW (or something else like Fleetfoot for crit reduction)
- save Latent on Mugen with HHG->L stone at end and just Slowing Sweep-> Vets on Shadow Hikari to accelerate fight
- route out more Latents in other places like Yurinas/Elderly Soldier to skip more inn trips, skip Yurinas re-gear
- skip armsmaster for final trip and go as Merch using Divine Dual Edge for randoms or use stones?
- possibly cutting Winterbloom + Rev Jam with better play/luck in final fight
________________________

Hikari Solo Speedrun Route (some early game parts taken from Dalia's route, credit to them)

Technical settings/suggestions (mostly taken from Dalia's notes):
- Message Speed: Fastest
- Text Display: Short
- Screen Effects: Disable
- Dynamic Battle Camera: Disable
- Dynamic Boosted Attack Camera: Disable
- change game cutscenes to fast forward (carried between files)
- preload before you start by loading any file and exiting to main menu
- on PC, you can bind keys for convenience or double mash with keyboard and controller
- always switch to daytime if able when exploring, unless night is specified
- break/flee encounters you don't need to fight
- set battle speed to 2x as soon as you enter your first battle
- always run on ladders as it doesn't affect step counter

Start Hikari 1

First Battle, Sword x2 with both

Second Battle
Hikari: BPx2 Sword to Officer (middle guy)
Ritsu: BPx2 Wild Cut to Officer (middle guy)
Rai Mei: BPx2 Sweep

Third Battle
T1
Hikari: Sword to General
Ritsu: Wild Cut to General
Rai Mei: Sweep
T2
Hikari: BPx3 Hachimonjigiri to General
Ritsu: BPx3 Wild Cut to General
Rai Mei: BPx3 Sweep
(if Wind S drop [30% twice], use STRAT A else STRAT B. If double Wind S, use spare on any random)

Tavern Challenge
T1: Aggressive Slash
T2: Sword x3
(No to learning; this route will mention which ones to learn if so.)

Go left to benkei then to back area
Get 1,600$ then bribe

If STRAT B
- Buy Long Spear (you will be short money, so pick 2k outside Oresrush later)

KO 2 enc for level-up before Ritsu
(Sword->Hachi x3 for first, FYI ants are tanky and weak to sword)
Get Fire S

Ritsu Mishuyo (1,850 HP) - Sword - Bow - Fire
STRAT A (52 secs)
	Fire S
	Wind S
	Sword
	Aggressive Slash
	BPx4 Piercing Thrust
	Defend
	Defend
	BPx3 Aggressive Slash (if misses Sword next turn then BPx4 Hienka)
	BPx3 Hienka
	Sword

STRAT B (60 secs)
	Sword to Footman
	Fire S
	Hachimonjigiri x2 to Footman
	Aggressive Slash
	Sword/Agg Slash if had misses before
	BPx4 Piercing Thrust
	Defend (or Plum if no more SP)
	Defend
	BPx3 Aggressive Slash (if miss, then Sword next turn then BPx4 Hienka)
	BPx3 Hienka
	Sword

Go to Castle and get
- Critical Ring in bottom left
- Thunder S
- Fort S on rightside stairs ladder (use anytime when in item menu)

Optionally break/flee/KO encounters as you go to EM but skipping is ideal
Use Latent freely

Go top left through Oresrush/Cropdale area toward harbor
Tag Cropdale
Get 1600, enter harbor, exit, and TP back in

Go to New Delsta Harbor
Tag Abandoned Village

Get Herb of Serenity, reset for stone market

Shop
Sell:
- Crit Ring
- Herb of Serenity
Buy:
- 4 Thunder M (max)
DAY

In Southern Cape Cold Snows, get Lychee S

(Note: use 3-4 Thunder M depending on encs in Scholar map)
Enter Scholar Shrine, KO enc w/ Thunder M
Exit and go to Scholar Guild, KO again w/ Thunder M

Get Scholar
- Learn Lightning Bolt + Analyze
- Put on Evasive Maneuvers

Reenter shrine for autosave (if another enc before entering, KO again and reenter still for the autosave)
Exit, get Ice M, and go toward Winterbloom, KOing 3rd or 4th enc w/ Thunder M

Tag Winterbloom
If you used all 4 Thunder M, get the Ice M behind the recordmaker's house and use in place of Thunder M next

TP Abandoned Village
Tag New Delsta

Challenge entrance NPC "Merchant" (3 stars)
T1: Thunder M
T2: Learn Leaf Toss

Exit, go via water to Clockbank 6300 then Thief Shrine step reset

Tag Clockbank, cycle DAY/NIGHT for safety
Go up left stairs, then hidden left down stairs to water
Enter clock tower
- RUN up ladder and start WALKing once off ladder
- Get Inferno Amulet and S+Q
- RUN to get Seraphim Spear
TP Clockbank, get THIEF JOB

TP Abandoned Market, exit and roll for Stone Black Market again
Sell:
- Seraphim Spear
- Inferno Amulet
Buy:
- 1 Fire S
- 1 Ice S
- 3 Fire M
- 3 Light M
(This assumes you have 1 more stone M in your inventory, usually Ice M.)
(Next we will get earrings, then rainbow bottle to unlock Inventor)

TP New Delsta
Buy 2 Unerring Earring
Go UP then LEFT to avoid Throne cutscene
Go to Game Parlor
Bribe 300 Dealer in backroom
Go to DAY

Challenge bar thief "Customer" (1 Star)
T1: Leaf Toss (don't boost)
T2: Learn Heckle
(if you get candy drop, use it or sell at Canalbrine shop)

Exit and talk to Quest girl twice to finish

TP New Delsta Harbor, go to Totohaha harbor (2nd option)
Go to Canalbrine harbor (2nd option again), go to shop
Buy
- Crit Earring
Sell
- Candy (if dropped)

TP Ryu
Go toward Conning

In North Conning, turn to NIGHT asap

Four Scorps battle:
T1: Ice M
T2: DAY

In next Conning Map, turn to NIGHT again asap

Four Scorps battle again:
T1: Fire M
DAY

Tag Conning Creek, GET APOTHECARY
Get Rainbow Bottle

TP New Delsta, get inventor + 2 skills
TP New Delsta, go to Borderfall
In Borderfall, get Thunder M (KO enc w/ Fire M)

In map outside Montwise, go to NIGHT briefly to force and KO enc again w/ Fire M
Tag Montwise
Start Hikari 2
Enter Forsaken Graveyard, get Grail of Life

MENU:
- STEP AHEAD

TP Crackridge harbor
In Southern Crackridge Wilds

Armor Eater and two Wild Mole IV:
T1: Light M
T2: Thunder M

Walk part of the map
Get 6400

In Western Crackridge Wilds, go toward Crackridge

Armor Eater and two Wild Mole IV:
T1: Light M
T2: Leaf Toss x2 (spends 1000 leaves, do NOT overboost) OR M stone (saves 1k)

Tag Crackridge
Challenge Guitarist
T1: Leaf Toss x2
T2: Learn Bedrock Break

Exit, get 8500
KO battle same way again (Light M, Leaf Toss x2 or M stone)

If you got enc early, optionally challenge and flee NPC (recommended)
Get Thunder M
Get Merchant
Menu:
- Job to Merchant
- Learn Collect, Sidestep, Hired Help
- Grows on Trees, Boost Start on

In Gravell map, get Thunder L and switch to NIGHT immediately after

2 Dreadwing and Creepy Fledgling
Normal battle (not first on T2):
T1: HHG x3
T2: Thunder L
else if first on T2:
T1: Thunder M
T2: HHG x4
(saves L)

Tag Gravell + get Quartz Shield
Shop:
- buy 11 Grape M
Exit, get 23500
TP Gravell, exit, WALK to get Starsplitter

MENU:
- Optimize, put on Victory Ring and Unerring Earring
- Job to Inventor

TP Cropedale
Bribe 3k tavern's Grape Expert

TP Conny, exit and do Grape Quest
Use Nourish M and heal
Force battle at night (Catapult Sword x3 on 4 Scorpions)

Whenever 630 JP+, menu:
- Learn 3 Apothecary skills + put on Hale and Hearty over A Step Ahead

In Sai area, get Fire M + 6200 + Pom M
In Wellgrove area, get 7200 + Lychee L
Tag Wellgrove, exit
Get Refreshing Jam + Magus Knife
In next map, get Pom L
Before Timberain map, get Magic Eater + force and KO enc before transition + menu

Menu:
- Job to Merchant
- A Step Ahead over Grows on Trees

KO battle with HHB x4
Tag Timberain

Enc
- Hienka, Defend, HHG if Raging Treant w/ 2 Wanderweeds
- HHB x4 else

Timberain, bribe three:
- Bribe 10k Conscious Stone (right fountain guy)
- Bribe 7.5k bottom right old man

Go to equipment shop:
- Bribe 3k store guy for upgraded armor
Buy
- Royal Guard's Mail (26,500) (equip it)
Sell:
- Magic Eater
- Magus Knife
- Olive L

Quest:
- get Azure Sun Sword
- turn in quest

Items:
- Get Conscious Stone + Protective Necklace
From Inventory/Menu:
- Put on Protective Necklace over Unerring Earring (use + to swap slots if needed)
- Use Crit L

Menu
- Job to Inventor

TP Abandoned Village, go to Abandoned Waterway
Get
- Wriggling Root
- Wriggling Root
- 8k
- Wriggling Root
(Defend -> x4 Catap for elementals else x3)

NIGHT
TP Montwise, go to Water Sprite Dungeon
Get Lychee S outside + NIGHT before entering
Catap x4 for goat/shrew pair or shrew/adds or double weasel else x3
(if caught by surprise, can Hienka or M Stone or use Catapult damage glitch w/ for dmg; finish goat with hachi x1)
Inside, get
- 10k
- Blessing in Disguise (skip if you saved a Beastlings by using Guards earlier)
- Pom L
- Rusty Staff

TP Wellgrove,
Bribe 1k Mysterious Merchant in top left outside department store (will get Invig L later)
Enter Road to Mother's Garden (NIGHT still)
x4 Catapult KOs all
Get
- Stinging Dagger
- Silent Bandana (equip from item menu asap)

TP Montwise, exit toward Merry Hills
Force NIGHT encounter before menuing (catap x3)

Menu
- Job to Warrior, learn Abide, Stout Wall, Vengeful Blade
- Job to Merchant

HHB x4 (anteater requires x4 specifically, but 3 birds can be HHG x4)

Tag Merry Hills
Bribe entrance NPC (50 leaves) to get Red Apple (optionally get Lychee L too)
[If no latent, use Inn]
Stay on NIGHT to run through to back map then go to DAY
Get 2700 + Empowering Necklace

TP Gravell
Challenge Debt Collector (15,441 HP, weak to Spear Dagger, Staff, Thunder)
T1: Vengeful
T2: Bedrock Break
T3: HHG x4
T4: Hachi x2 if needed
(You can either learn this person's Drive Back or Zeto's Slowing Sweep later. Slowing Sweep is a bit better for being cheaper and having higher odds in one fight later of helping you (better turn order + crit chance for later attacks), but it's up to you. This route will assume you learn Slowing Sweep, but you can skip it w/ Drive Back.)

Get Armsmaster
Shop
Sell
- Stinging Dagger
- Spiritlord's Staff
- Blessing in Disguise

Menu:
- Empowering Necklace over Victory Ring
- Heal HP to full

TP Merry Hills, exit to fight Assassins

Assassins if Hikari is late in turn order T2
T1: Hienka Assassin 2 (topmost one), HHG x1
T2: HHB x4
T3: Pom L
T4: Hienka Assassin 2 (topmost one), HHG x1
T5: HHB x4
T6: HHV x3
[74k spent]

Assassins if Hikari is early in turn order T2 (i.e. no enemy actions before him or just one)
T1: Hienka Assassin 4 (leftmost one), Pom M
T2: HHB x4
T3: Hienka Assassin 1 (rightmost one) if able, HHV x3
T4: Hienka Assassin 1 (rightmost one) if able, HHV x1
[75k but safer]

TP Timberain
[If no Latent, go to INN]
Go to back area to get Wind L
Challenge Elderly Soldier who guards divine weapon

Elderly Soldier (27303 HP, weak to Spear Axe Ice Wind)
T1: Hienka, Bedrock Break
T2: Vets x4
(If Hienka already triggered Def Down, then use Vengeful in place of BB)
(If miss and no defense down, then BB again if turn order allows safely or Flee, Heal, retry Vets x4)
Get Rusty Spear

TP Crackridge Harbor,

Menu
- Victory Ring over Protective Necklace
- Job to Inventor
- DAY

Go toward Unfinished Tunnel (Optionally get Lychee S)
Challenge Unfinished Tunnel Overseer guard (2,816 HP weak to Spear Bow Fire Dark)
T1: Defend
T2: Hachi x4
Enter Unfinished Tunnels to get (x4 catap enc):
- 2100 (at entrance)
- Rev Jam (tiny bit further, up two ladders)
- 13.5k (main path downward but before the rails to the central pit, go upward)

TP Wellgrove, use Inn for Latent if needed, and get Invig L (use asap in next menu), exit
Go to Quicksand Gaol
- get Wind L (catap x4 enc)
- then JOB TO MERCHANT
- Heal HP to full (+ need latent)

Lord of the Sands (40k HP, weak to Sword, Dagger, Axe, Ice, Light) (adds 2376 HP Sword Axe Wind Light)
Goal is just break, defense down, and Beastlings. Use Wind L if adds are summoned, it's possible to KO before summoning with Hienka.

No Latent and go first T2:
T1: Vengeful x3
T2: Defend
T3: Wind L
T4: Hienka, Bedrock Break
T5: HHB x4

No Latent and go later T2:
T1: Vengeful
T2: Wind L if he summoned
T3: Bedrock Break
T4: Agg Slash x3
T5: HHB x4

Yes Latent and go first T2:
T1: Hienka, Agg Slash
T2: Bedrock Break
T3: HHB x4
T4: Hachi x2

Yes Latent and later on T2:
T1: Hienka, Agg Slash x2
T2: Bedrock Break
T3: Defend
T4: HHB x4
T5: Hachi / Wind L

Get Rusty Axe + Reinforce Jam

TP Gravell
DO NOT ACCIDENTALLY BUY THE WEAPONS
Get Divine Spear + Axe

TP Montwise, go to shop
Buy:
- 11 Grapes
- 21 Plums
- Starlight Hat

Menu:
- Job to Armsmaster
Equipment:
- Optimize
- Conscious Stone over Emp Necklace (keep Victory Ring on still)
- Peak Performance over Evasive Manuevers
- Summon Strength over Hale and Hearty
(so PP, SS, ASA, B-S)
- Use NUTS if you haven't already
- (Use Inn for latent here if needed)

Arena (most are overboosted for overkill exp)

- Battle 1 (one gladiator): Hachi x3
- Bribe arena entrance left guy above torch 1k Spectator, get and use Sharp Nut S
- Battle 2 (three NPCs): Warlord's Spear x3
- Plum SP to full if needed
- Battle 3 (Zeto the Butcher): Lionheart x3 (learn Slowing Sweep if you didn't learn Drive Back)

Battle 4 (Bandelam the Reaper mini): Lionheart x3
Battle 5 (Bandelam the Reaper big): Hienka, Slowing Sweep-> Lionheart x4 (and extra tap if needed)

Menu:
Equipment:
- Emp Necklace on
- Unerring Earring on
Support Skills:
- remove Summon Strength, put on Hale and Hearty
[TBH this menu above isn't really needed but just helps odds on Yurinas. You can skip and just hope and it's also fine. You can retry her battle til you get it, for free.]

Use Inn
Return to arena and challenge Fainthearted Youth (Sword x1) (FLEE if you are not a merchant)

Yurinas
T1: Hienka, Bedrock Break
T2: HHV x4
(if no Def Down, delay the Vets and do Hienka/BB again and hope)
(you can retry fight indefinitely at the desk, just keep using inn)

Job Menu:
- Job to Armsmaster
Supports Skills:
- Hale and Hearty OFF, EM ON
Equipment:
- Optimize
- Victory Ring
- Champ Belt

TP Wellsgrove, start C3
Bribe tavern Azuma 1k

Go to DAY and enter Secret Forest
WATCH SP and Plum after battles (Warlord's Spear x3)
Get
- Light Amulet
- 10k
- Refreshing Jam

3x Ku Soldiers: Warlord's Spear x3
General Rou: Slowing Sweep -> Spear x3 -> Lionheart x2 -> story latent
[Learn Divine Dual-Edge over Hachi]

GENERAL ROU DROPS A FORT L -> use it immediately from menu

TP Montwise, exit toward mountain guard (Divine Dual-Edge x2 weak randoms)

Guard (15,441 HP, 4sh, weak to sword dagger shadow; skill is 2x polearm to all foes Twin Serpents)
T1: Defend
T2: Lionheart x4

In mountain pass (Defend -> Warlord x4 encs; big ape needs Lionheart x2 follow-up), get
	[WATCH YOUR SP]

In Southern Stormhail Snows, get:
- 15k (behind wall crack)

Tag Stormhail
Get Knight's Armor
Challenge Clingy Woman in item shop
T1: Slowing Sweep
T2: Lionheart x4
T3: Lionheart
T4: Lionheart x2

Use Sharp L

Kunzo (fights w/ 2 clans mei spearmen)
- 11,000 HP, 5sh, weak to Dagger Axe Thunder
Clan Mei Spearmen
- 5,800 HP, 3sh, weak to Sword Bow Fire Shadow
T1: Defend
T2: Warlord's Spear x4
T3: Lionheart's Axe x3

Jin Mei (flashback)
T1: Sword
T2: Sword
T3: Defend
T4: Wild Cut x2
T5: Wild Cut x4

Use Nourish L + Heal for Peak Performance
KO enc with Defend -> Warlord Spear x4 (USE PLUMS before battles)
Get
- Thunder M if no more
- 16k
- Thunder L
- Thunderstorm Amulet

Menu after the Autosave
Equipment:
- Thunderstorm
- Conscious Stone
Jobs/Support Skills:
- Job to Merchant
- Peak Performance OFF, HaH ON
- Heal HP, Lychee to Full Latent

Rai Mei (fights w/ 2 clan mei swordsmen)
- 55,000 HP, 7sh, weak to Sword Staff Fire Light
- CHANGES at some HP threshold, maybe 75%, and goes to
- Thunderclap Stance w/ weaknesses Dagger Axe Wind Dark (hhb to break)
- Clan Mei Swordsmen
- 7500 HP, 3 shields, weak to Spear Bow Fire Thunder Dark
- Rai Mei doesn't shift weaknesses until certain HP threshold; collects for 36k
Adapt based on Def Down procs and turn order, depending on how many adds attacked you. Collect if convenient
Sample:
T1: Hienka-BB
T2: HHB x4
T3: Pom M
T4: BB
(if an add got their turns before you KOed them, T5: use Wriggling Root here and delay a turn)
T5: BB
T6: HHB x4
T7: Hienka-Collect x2
T8: HHG x2
T9: M Stone if needed

Menu:
- Job to Armsmaster
[a faster alternative here is to just go as Inventor and S+Q in Ku Sands if you'd like]
Equipment:
- Optimize
- Victory Ring
- Champ Belt
Support Skills:
- Peak Performance back over HaH

TP Winterbloom
Bribe 7500 Townsperson woman in second house to get Rev Jam in Inn
Use Inn for latent and etc

TP Wellsgrove, run toward Ku
In Western Sai Sands, get Reinforce Jam (on top of gate)

In East Ku Sands (Warlord Spear x4 enc), get
- if you used the Thunder L from Rai Mei castle, get the Thunder L here (on right near entrance)
- Pom L (on left near entrance)
[if you see pair of Apeking III, use Hienka-> Defend/WSx4 -> Lionheart xMAX, very dangerous duo; triples are safe though since spear is stronger w/ bigger mobs]

Start Hikari 5
USE INN FOR LATENT IF NEEDED BTW

Menu:
- Job to Thief and learn to get Ensnare passive
- Job to Merchant
Equipment:
- DO NOT OPTIMIZE
- Remove Warlord's Spear
- Put on Silent Bandana over Starlight Hat
- Emp Necklace
- Conscious Stone
Support Skills
- Put on HaH over PP
Items:
- any leftover nuts
- heal HP to full

Go to Kazan, sell at shop (should have 320k+)

Menu at top of stairs right before General Ritsu:
- PUT ON ENSNARE OVER EM

General Ritsu
- 75,000 HP, 7sh, weak to Spear Bow Fire Shadow, gives 5500 leaves

T1: Hienka-Bedrock Break
(if you go first T2 can delay the Hienka to T2 to do more damage)
T2: Vengeful
T3: HHB x4

(adapt here, if you have low HP, use Root sooner and if so use only Stout Wall x1)
T4: Stout Wall x2
T5: Wriggling Root
T6: Pom L
T7: BB
T8: HHB x3
T9: HHV x4
T10: Sword
(on the HHV x4 turn, if his Collect hover is below 52%, you need to Hienka before the HHV x4)

Alternate if HP is low and need to root sooner:
T4: Wriggling Root
T5: Stout Wall
T6: Sidestep/Grape M
T7: BB
T8: HHB x3
T9: HHV x4
T10: Sword

LYCHEE TO FULL LATENT (not mandatory but nice extra chip damage)
MAKE SURE SILENT BANDANA IS ON
FYI you get autosave before next bosses

Mugen 80,000 HP 6sh, weak to Spear Axe Thunder Light ALTERNATIVE
T1: Hienka-Stout Wall x3
T2: Pom L
T3: HHR x4
T4: BB
T5: HHB x4
T6: Wriggling Root
T7: Reinforce Jam
T8: HHB x3
T9: Hienka-HHV x4
T10: Thunder L

Shadow Hikari
T1: Lychee L
T2: Aggressive Slash
T3: Aggressive Slash x2
T4: HHB x4
After cutscene, use Lychees/tank attacks to fill up latent before finishing
T5: Sword / any L Stone if you have spares for overKO exp and are on threshold of leveling
[alternatively, throw Reinforce Jam T1 and Vets x4 T2 if you want to accelerate it; depends how much money/resources you wanna conserve for EK]

Enshrouded King
Enshrouded King 98,000 HP, 10sh, weak to Sword Spear Bow Staff Thunder Wind

T1: Hienka-Stout Wall x3
T2: Heckle
T3: Rev Jam/Refresh Jam/Grail or delay if HP is high (depends how early Heckle got off and T4 turn order)
T4+: adapt from here (usually boosted Heckle then Hienka/boosted Stout Wall, etc, keep up buffs/debuffs/high HP)

Every turn, EK does Diabolical Spear and Triple Poison Sting in some random order and keeps repeating that until he gets lower on health, when he gains more actions. The goal is to chip him a bit, then burst him to avoid the multi-actions.

Usually at L33, EK's Diabolical Spear 6-hit multhit with both heckle's debuff and stout's buff makes you take ~210 per hit for a total of 1260 usually (crit seems to be ~310). He doesn't usually crit more than twice, so 1460 is a safer mental number to use.

Triple Poison Sting (TPS) with both buff/debuff deals ~490 damage (~714 ish if crit) and about ~28 SP and always 1 BP unless you're at zero already. I'd use 500 or 700 as a safe number.

Together, with both buffs, you can take 1960 damage per double action of his in a turn (could be more if everything crits, but it's unlikely). If he has 4 actions back to back, that is ~3900 damage, so you want your HP to be above that for safety. (If you're paranoid, you can do 4k+ and it should be very safe, barring egregious bad luck.)

The goal is to maintain both Stout Wall+Heckle. Ensnare helps with Heckle's attack debuff, so you may not need to boost it as a much. (Ex if both SW and Hckl are low, increase SW's turns first.)

Chip him but do not put him at 35%+ Collect, since he unlocks more actions. Ideally, anywhere from 23%-34% is a guaranteed win with our plan.

Use Hienka's as you get them. We want to get him to 2 shields. To heal, use Wriggling Roots if your SP is high, else Grails/Refreshing Jams heal SP too which is needed since 3 TPS puts you at 0 SP basically, and you need SP for your skills. If you're full or high HP ish, you can Reinforce/Red Apple/Pom L.
(Side note, you gain 1 BP per turn but he steals 1 BP per turn, so you actually always stay at BP neutral if turn order is bad. To gain BP in this fight, you can't count on your natural gain unless turn order is good, so you need to be using those items to get your full BP. Don't be stingy, and feel free to use them aggressively.)

You have two Rev Jams for this fight. Use one early on to gain initiative to setup more Heckle/SWs (usually on T3/T4). The last I like to save as a panic button or just midway through the fight; it can also be used to gain tempo if you're running low on Buff/Debuff stacks.

Red Apples/Reinforce are better if you're at 0 BP. If you have Latent, it can be better to Hienka before using Reinforce for efficiency. Hienka is also nice for putting you AFTER his actions, so he steals BP, then you can heal yourself on the Hienka turn with Jams or so.

If Def Down procs, can get HHB x4 to help chip shields faster, but alternatively, can bring him to 2 shields with Hienkas, then use HHA to heal up (each single guy hit heals you ~1372 HP and ~23 SP) while doing extra chip damage but not breaking. HHA do 5-5.5k per hit and don't hit shield, it's ~7.7k ish per hit if he has Def Down. Every 1k is a bit more than 1% damage to him (98k health) so don't overdamage.

Can optionally use Aggressive Slash to chip shields more too if turn order permits, but it should only be saved for the final burst coming up, if you need to accelerate and reduce shields fast.

When he's at 2 shields or 1 shield with chip damage (23% Collect is a good number to aim for; it gets rangier if it's lower), it is time to do the final burst. Time your turn to have 5 BP + Latent (Reinforce is good for this). HP doesn't matter so long as you get your turn before wiping.

Then do Hienka to break. Then on Hienka's bonus turn, do HHA x4. Then another HHA x3. He will unbreak and whack you a bunch. Defend and HHA x2 to KO. (Note you do not need Def Down when going for the final burst, and it doesn't actually do anything other than strengthen Hienka a bit. The final HHA x2 can get 5k more damage from it though, but the broken HHA all hit caps of 9999 regardless.)

In total, the fight has up to 200k in assassins to use, though often you use less or convert some to Beastlings to chip shields. Remember to prioritize Heckle/SW above all else, unless you're going for the burst, and use your resources freely for this final fight. Don't be stingy with them.

Time is when FIN screen puts up. GG.