I am running a high atk 4* Setsuna who seem to work pretty decent in arena, but she get outclassed by Gordin overall. Probably going to try clearing the game with my 4*s, but going to take a lot more time to level a variety to cover the chapter requirements.
I am stuck at C9-2 Hard, do not have Tiki or Fae, and only just got my 4* Level 1 Nowi.
@Wuppeteer
Henry is a pain to level, and honestly even at higher levels his damage output is pretty pathetic (he takes a few hits to kill a green knight) unless he triggers his pink skill. The biggest problem with him is that while you are trying to bomb some knights with him, another mage (on a horse, because AI cheats) is going to run over and OHKO little slow Henry. He can tank swords and axes like a wall, but it is very likely he gets OHKO even by green tomes before he can get in range of anything else.
I liked him so I tried adding him to the roster, but gave up around level 26 and switched to Tharja :(