The controls are awesome! The music is very nice too. SFX might be worked on though. I made it to ~50 seconds then fell of the map while doing cool movements lol.
So some things I wanna point out:
1- Your gun has an shadow but you don't which kind of breaks the immersion.
2- It is not nice to spam click for shooting, a "hold-to-shoot" mechanic could be nicer.
3- It is too hard to shoot flying enemies
Overall nice work, I loved it!