Hello.
What I like:
- The music. 4th in a row with good music. Nice.
What can improve:
- The jump. There are 2 problems with it. 1- There is no "just in time"/coyote jump. 2- You jump too high, so you cannot see what's below you and that is ( in my opinion ) not good.
Suggestion:
- Make it so that music does not restart when you die. Tutorial here.
- Add SFX for when the player jumps/die.
- Add screenshake.
Note: Since you said this is your first jam, congrats for finishing your game :D