giant fucking wall of text on E5

Anything within an arrow can be completed in any order

->First Gauge
->
Second Gauge (can clear with CTF using AO)
Node I (all difficulties)
Node H (highest)
->Third Boss appears at Z2
->
S-rank node T
AS in LBAS defense (2/1/0/0) times
Seize AS at node K using STF (2/1/0/0) times
-> Z3 shortcut appears
-> Fight third boss
-> Once last dance is triggered, A-rank the boss with STF and CTF once each to debuff

Land-based Air Ranges
First Boss 4
Second Boss 2
Third Boss 7
C 6
T 2
K 3

Rules
Presented in order of precedence. For each node, keep going down the list until you satisfy a rule (which tells you the destination) or hit the empty default rule at the end.
Unless otherwise specified, counts include both the main and escort fleets

A:
All Fast + -> D
Euro ≥ (6/4/2/1) -> D
CLT ≥ 2 OR CV ≥ 3 -> B
All Fast AND (BB & carriers of any type) ≤ 4 -> D
(BB & carriers of any type ≤ 2 -> D
-> B

I:
CTF w/ AO AND (Germans&French) ≥ (4/3/2/2)? -> L
STF -> L
-> J

T:
Euro ≥ (6/4/2/1?) -> R
(BB & carriers of any type) ≥ 4 OR CLT ≥ 1 -> S
-> R

Q:
AO or AV ≥ 1 -> P
Z3 shortcut unlocked AND (CL & DD) ≥ 4 -> M
(BB & carriers of any type) ≤ (3/4/5/5) -> P
-> M

P:
BB ≤ (2/3/4/4) -> L
-> K

M:
Second Gauge -> K
All Fast+ -> X
Slow Ships Present AND CV ≥ 1 -> K
(BB & CV) ≤ 2 AND Euro ≥ 6 -> X
(BB & CV) ≤ 2 AND CVL in main fleet ≤ 1 AND CLT ≤ 0 -> X
-> K

K:
Before Third Boss is revealed -> I
BB ≤ 2 -> H
(CL & DD) ≥ 5 -> H
-> I

L:
(Germans&French) ≥ (4/3/2/2) -> O
-> Random?

X:
All Fast+ -> Z3
Slow SS ≥ 1 -> Y
CTF with AV ≥ 1 AND DD ≥ 3 -> Z3
CTF with (CL & DD) ≥ 5 -> Z3
(BB & CV) ≤ 2 AND CTF with All Fast -> Z3
(BB & CV) ≤ 2 AND STF -> Z3
-> Y

Debuffs/bonuses
Europeans (German, French, British, Soviet) get a 1.2x post-cap damage multiplier
Ships, foreign or not, deal crazy damage at third boss?
There is no definitive proof that Italians and Americans have no bonus damage, but no evidence that they have it either
No bonus for Swordfish