I'm just gonna say the art is the best part of the game and is overall amazing. The palette destributes alot of it to the aspect.
The gameplay is way too easy, altough i respect the brave ability to shoot almost every frame. My main probem is with the player movement: It's way too fast, with the jump in particular, and jittery. In turn i never really feel like I have much control over it, which sadly hamperes my enjoyment :<.
The procedural generation aspect is a bit undercooked, but I don't see how you'd have in that timeframe written a suitable algorithm for the rooms.
Overall it's competently made and feels finished, so good job.