Underworld is slightly better due to shorter setup and a full heal every ~30 turns. The shorter setup matters a little for Ancient and IE, but it especially matters for Life and Death. It's also easier to use due to greatly simplified momentum management and the full heal.
EE has higher burst and (slightly) higher sustained damage. The higher burst matters for some fights like PEX and Crystal and Stone (and to a smaller extent in many inn fights where one boss is squishier but more deadly than the other). However, it's significantly harder to use due to needing to build to 12 momentum every 12 turns for timeshift. Double turns being attached to a skill makes it vulnerable to "no skills" attacks like from Kathool and Squirrel. Also, 10 turn boost cycle with 12 turn timeshift cycle means you either need to let them desync or give up on 2 turns of boosting, which is annoying.
EE can definitely do all the boss fights too, maybe with the exception of Life and Death. (I've beaten every inn fight but life and death with EE.)
Overall, I'd say UWE slightly edges out EE because of shorter setup (4 vs 7 turns) and the full heal being more important than (slightly) higher damage and a final you can use every 12 turns instead of every ~30.
That being said, ChW can do all the Inn fights (though needs extra pots/res stack for a few) and v2 can do all of them bar Failed Doom.
- Both ChW and V2 should be fine for Wrath and Sloth - I beat Sloth first try with a level 85 v2 alt with minimal nature res stacking.
- Crystal and Stone is easy with v2 (with Verraad/Uragiri), ChW, EE, and UWE.
- In Duty and Rebellion, EE's higher burst matters a lot vs Intaym, but honestly, the fight is just laser blades/chargebursting/punching Illumina for 10 minutes.
- Life and Death sucks for all the classes, and sucks most for EE due to long setup. UWE is probably the best of the classes mentioned, though ChW is fine too. I'd say it goes UWE > ChW > V2 >> EE. Though, honestly, just use KAA or Cryptic :|
< Message edited by AstralCodex -- 8/7/2020 14:07:07 >