really nice concept! very fun and if refined, could be truly a treat to play. The game is a bit easy, the hardest class would probably be healer and that's because you have no way to defend yourself, despite it being the hardest, the game is still easy as the healer. id recommend maybe tweaking enemy stats instead of nerfing the characters, maybe add projectiles to some (For warrior to excel at killing) and some slow yet powerful ones(ranger) and making most enemies be more powerful in general (making healer more viable) also making the healers projectiles do damage would make it more viable as even though you wouldn't do much damage fast, you still have an option to defend yourself with. apart from that, the game is stellar!