Yeah.. I noticed I forgot to make the projectiles not framerate dependent. On my computer everything runs fine but everyone's pc is different. I didn't notice this until I showed a friend on a lower end computer. Maybe when the jam is over I can fix this and give the intended experience but still thank you very much for playing I completely understand the criticism.
Tip: You do not need to kill all the enemies to beat the level. If it gets to hard and you just wanna see how the game end just rush the key.