Hyrule Warriors Legends Weapon Information

Weapon Structure Information:
https://gbatemp.net/threads/release-hyrule-warriors-legends-save-editor-ntr-plugin.411349/page-35#post-6239974

Basic Rundown:
11 11 22 22 33 33 44 44 55 55 66 66 77 77 88 88 	// Amount of KOs to unlock skills
02 00												// Weapon ID (02 = Link's Hylian Sword Level 3)
18 01												// Weapon Power (280 Default Level 3 Base Power)
05 00												// Stars on Weapon (10% Boost to Power Per Star)
01 02 03 04 05 06 07 08								// Skill Slots (00 = Open, FF = No Slot)
03													// Weapon Identifier (03 = Normal Weapon, 13 = Legendary, 0B = Master Sword?)
00 00 00 00 00 00 00 00 00							// Gap of nine 00s before the next weapon starts

Empty Weapon Slot:
00 00 00 00 00 00 00 FF FF 00 00 00 00 FF FF FF
FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00

^Search for that to insert a weapon of your choice into the game without overwriting any other weapons.
Weapon offsets start at 0x2F372 and finish at the end of the save file (0x39461). There is a gap of nine 00s between each weapon.
The start of one weapon to the start of the next is 0x28 values.

Skills List:

00 Open Slot
01 Str Attack I+
02 Str Attack II+
03 Str Attack III+
04 Str Attack IV+
05 Str Attack V+
06 Str Attack VI+
07 Fire+
08 Water+
09 Lightning+
0A Light+
0B Darkness+
0C VS Legend
0D VS Time
0E VS Twilight
0F VS Skyward
10 VS Sorceress
11 VS Beast
12 VS Dragon
13 VS Undead
14 VS Soldier
15 VS Ganon
16 EXP+
17 Rupees+
18 Materials+
19 Slots+
1A Stars+
1B Hearts+
1C Health+
1D Special+
1E Bombs+
1F Arrows+
20 Boomerang+
21 Hookshot+
22 One-Hit Kill
23 Sturdy Feet
24 Regen
25 Defenseless
26 No Healing
27 Adversity
28 Compatriot
29 Master Sword Skill I
2A Master Sword Skill II
2B Sp. Attack+
2C Fin. Blow+
2D Reg. Attack+
2E Heart-strong
2F Focus Spirit+
30 Hasty Attacks
31 Food+
32 Hammer+
33 VS Sea
34 VS Termina
35+ lol crashes the game

Weapon List:

// Wii U Default Characters

00 Link Hylian Sword
01 Level 2
02 Level 3

03 Link Magic Rod
04 Level 2
05 Level 3

06 Link Great Fairy
07 Level 2
08 Level 3

09 Link Gauntlets
0A Level 2
0B Level 3

0C Lana Book of Sorcery
0D Level 2
0E Level 3

0F Lana Spear
10 Level 2
11 Level 3

12 Lana Summoning Gate
13 Level 2
14 Level 3

15 Zelda Rapier
16 Level 2
17 Level 3

18 Zelda Baton
19 Level 2
1A Level 3

1B Impa Giant Blade
1C Level 2
1D Level 3

1E Impa Naginata
1F Level 2
20 Level 3

21 Ganondorf Great Swords
22 Level 2
23 Level 3

24 Sheik Harp
25 Level 2
26 Level 3

27 Darunia Hammer
28 Level 2
29 Level 3

2A Ruto Zora Scale
2B Level 2
2C Level 3

2D Agitha Parasol
2E Level 2
2F Level 3

30 Midna Shackle
31 Level 2
32 Level 3

33 Fi Goddess Blade
34 Level 2
35 Level 3

36 Ghirahim Demon Blade
37 Level 2
38 Level 3

39 Zant Scimitars
3A Level 2
3B Level 3

3C Link Master Sword
3D Link Hylian Sword Level 4
3E Link Magic Rod Level 4
3F Link Great Fairy Level 4
40 Link Gauntlets Level 4
41 Lana Book of Sorcery Level 4
42 Lana Spear Level 4
43 Lana Summoning Gate Level 4
44 Zelda Rapier Level 4
45 Zelda Baton Level 4
46 Impa Giant Blade Level 4
47 Impa Naginata Level 4
48 Ganondorf Great Swords Level 4
49 Sheik Harp Level 4
4A Darunia Hammer Level 4
4B Ruto Zora Scale Level 4
4C Agitha Parasol Level 4
4D Midna Shackle Level 4
4E Fi Goddess Blade Level 4
4F Ghirahim Demon Blade Level 4
50 Zant Scimitars Level 4

// Wii U DLC Characters

51 Cia Scepter
52 Level 2
53 Level 3

54 Volga Dragon Spear
55 Level 2
56 Level 3

57 Wizzro Ring
58 Level 2
59 Level 3

5A Link Horse
5B Level 2
5C Level 3

5D Twili Midna Mirror
5E Level 2
5F Level 3

60 Link Spinner
61 Level 2
62 Level 3

63 Zelda Dominion Rod
64 Level 2
65 Level 3

66 Young Link Mask
67 Level 2
68 Level 3

69 Tingle Balloon
6A Level 2
6B Level 3

6E Ganondorf Trident
6F Level 2
70 Level 3

// New Characters for Legends

71 Linkle Crossbows
72 Level 2
73 Level 3

74 Skull Kid Ocarina
75 Level 2
76 Level 3

77 Toon Link Light Sword
78 Level 2
79 Level 3

7A Tetra Cutlass
7B Level 2
7C Level 3

7D King Daphnes Sail
7E Level 2
7F Level 3

80 Cia Scepter Level 4
81 Volga Dragon Spear Level 4
82 Wizzro Ring Level 4
83 Link Epona Level 4
84 Twili Midne Mirror Level 4
85 Link Spinner Level 4
86 Zelda Dominion Rod Level 4
87 Young Link Mask Level 4
88 Tingle Balloon Level 4
89 Ganondorf Trident Level 4
8A Linkle Crossbows Level 4
8B Skull Kid Ocarina Level 4
8C Toon Link Light Sword Level 4
8D Tetra Cutlass Level 4
8E King Daphnes Sail Level 4

// Hyrule Warriors Legends DLC Characters

8F Medli Harp
90 Level 2
91 Level 3
92 Level 4

93 Marin Bell
94 Level 2
95 Level 3
96 Level 4

97 Linkle Boots
98 Level 2
99 Level 3
9A Level 4

Misc Notes:
Default Level 1 Weapon Damage: 50 (80)
Default Level 2 Weapon Damage: 96 (150)
Default Level 3 Weapon Damage: 118 (280)
Default Level 4 Weapon Damage: 1F4 (500)