Has a lot of potential! I like the ability to wall jump and using that to climb. The art is also really nice and the animation is very well done. It's a very nice, solid starting point
I think there should be a pause menu or a mute button next. As for the gameplay itself I feel that the way the character moves after jumping is a bit slippery which makes platforming inconvenient. Additionally, in the puzzle with the monsters where you have to press N I think you made the gaps a bit too small for the character to fit into without getting hurt.
Overall I'm really looking forward to seeing where this goes! Sorry about your loss.