I like the idea, but I definitely would have liked more to do during each level. I would usually just send in my slimes and mothmens (not really sure what they did, but i sent them anyway xD) at the hero and put archers in neutral stance then watch them battle. maybe spells with cooldowns so I could heal guys, teleport, dmg hero, spawn monster, place trap, stun, etc.
I think there wasnt much strategy in which layouts you picked, especially since you don't see the placement of the units before you pick. would be nice if it showed where all the units would be, and maybe each different layout could give a different bonus to mix up strategies too
I think the game does great in capturing reverse dungeon crawler theme. increase in number of units as hero delves deeper and tons of your units dying just to finally kill the hero once lmao finally got that guy on chamber 5