Very creative theme interpretation. I liked this game. It had just the right combination of strategy and mindlessness for me, and the levels were a very good size. Personally I prefer a different control scheme but I got used to it (I would guess maybe 1 in 15 crawlers each annual Dungeon Crawler Game Jam use the same control scheme you did).
I've played twice and I think I made it 5 levels in? I'm going to revisit again to try and beat it.