Phew just beat this after being at the edge of my seat on the boss fight! Super cool mechanic with how he interacts with the traps had me watching my every step. I liked the general room style you had and variation of monsters. Reminded me of the first Zelda.
I'm not sure how you generated what will be in what room, but on my winning run I had 3-4 rooms with the same layout. Would be nice if there was some exclusion to a room being selected if it's already chosen.
I also found if I hit multiple arrow keys at once the attack would go out in all selected directions. It was useful, but something to keep in mind if not intended.
Great jam submission, had a lot of fun playing!