First of all i like this game, i like the idea. But here are my complanes for giving 1 star:
1) The game has bugs. The game is probably not glichresitant.
2) The bats are realy weak even for vilagers, so to be usefull they should be cheper 3-5 gold.
Goblins should cost 10 gold. After all no hero is weak vs them.
3) The cleric should be weak vs humanoids, after all we all had watched goblin slayer(not the first episode). Also should be weak vs fire
4) It would be better if it had numbers on the hp bar, how much damage is inflicted and if the attack is blocked (just like the broken trap)
5) The mistic trap should have like a poisen effect- every move the hero makes -1 hp depending on the level of the trap, afterall it is caled pain curse
Also here is material for dungeon sweet dungen 2- read the manga or novel called lazy dungen master. After i read the first 4 chapters i wanted to play this game again. I think you can find inspiration from there.