What class did you use to beat the final boss? *minor spoilers*
Hokage. I always picked Hokages if they didn't have a terrible set up. I found them to be the most fun and fit with my preferred playstyle the best. Barbarian would have been the other option.
Beat bosses 1 and 2 with Barbarians. 3, 4 and final with Hokages I think.
Assassin with the knock back trait, phase 1 just keep knocking him back, and dodge attacks. Phase 2, when he goes into the middle, pogo stick him like 4-5 times, attack him every chance you get otherwise. His high crit plus the knockback was big damage and kept him from slashing you with melee attacks. Assassin's mistform was also good for me because there were a few of those mass dagger attacks that I wasn't sure I could dodge, so I just mistform'ed through those to be sure. I didn't use spells.
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