Your concept is good, it just needs a lot more polishing and fleshing out. The presentation of the cards after you used them also left me a bit confused as to what was actually happening, I think the flow of combat moved a bit too fast maybe. However, I did have an easy time learning the core functions of the game, so good job on making the UI easily communicate that. I forgot almost all of what was said in the essay tutorial.
I think I died on room number 12 to some red queen guy. If this is polished a lot more I could see it being a very good game, keep making games!