Simply charming!
I rather enjoyed the flow of gameplay, and the blue and red UI was awesome. The character was cute and somehow (don't ask me how) feels relatable. I think with enough TLC this game has a lot of potential :) the music is great, Kevin rarely disappoints!
Many improvements can be made, but given the code restrictions, I think they're fine in my mind. Would have been nice to see some SFX, character animations or background art to help bring the piece together. It does remind me of VS, which isn't a bad thing and I like the genre but it would be interesting to see the game expand in its own direction (if you keep developing).
Something I'd have done differently is have a black image over the screen with a soft transparent circle in the center and then it would give the impression that darkness is all around the player. By attaching it to your player, it should follow them around and look authentic without any code.
Something that you did that I wouldn't have thought to do, that you did well, was the high spawn time on projectiles. It makes the struggle feel more real and I appreciate things being made harder. So well done for that!
Thanks for submitting, I've subbed to you and look forward to seeing future developments from you, Enit.
~Tat