Absolutely enjoyed this one. Although, it was a bit slow in the beginning when I kept getting defeated by enemies and had to gradually slowly open up the paths. It became super satisfying to get all the upgrades. I wasn't sure what the point of revealing the paths on holes was as by that time I could already walk over holes, guessing I just collected that before it was intended, so if that's the case, bonus points for also including sequence breaking in your game :). The only bit of feedback is once I got the chest plate, the small hearts would only replenish half a heart when I was expecting them to still replenish a full one, but understand its still replenishing one hit point.
Appreciated all the details you put in this game, such as the scrolling room transitions, the detailed map, different music tracks. Also felt rewarded for picking up all the upgrades when going up against the final boss.
Overall, awesome game. Great work!