Thanks for the detailed review! I do plan to make a sequel someday, so this is very helpful information.
There actually is some synergy between classes (berserker has the 'overpower' passive which boosts damage based on the difference in ATK, which works well with cryomancer's ATK debuffs, while elementalist has a few spells that reduce elemental resistances.) But yeah, in hindsight I see how stuff like that might be easy to miss.
Thanks for playing!