Love the NES aesthetic you've got going on here! Had a couple minor issues:
- I'm not entirely certain what the end state is, I figured the S rooms were save rooms, and I found a W room and a skull room that didn't really do anything, but I assumed the W room is the "win" room for now?
- The wall climb appears to put the player into a permanent floaty state. Climbing up a wall and then moving away from the wall makes the character slowly float to the ground.
All in all cute concept, would love to see it polished more!