Took me a minute to understand what exactly was dealing damage to me. Might need a bit more of a description as to what the directional arrows mean--but I mean I eventually figured that out, so maybe not?
I figured I was at the bottom of the screen, so I thought the enemies that left the screen on the bottom were doing damage to me for a bit. I agree with Rokas that there should be like a gameboard piece or something that represents the player which advances forward.
It seems like the rows of 3 crossbows (or whatever the side-to-side cards are) are kind of unfair. If you get 3 consecutive rows like that you just continuously take damage without any ability to recover health, relying on RNG to deflect attacks, and eventually die.
But I really like the idea of navigating a dungeon like this, picking your battles and taking best of the worst choices. It's really fun and I've played it quite a bit! I can't wait to see what else you do with this, there's really so much potential here. Keep up the good work!!