Hey! I love the idea, This video might help you make the jump feel more responsive https://www.youtube.com/watch?v=7KiK0Aqtmzc. I know you can just restart but maybe save the previous two checkpoints so you can roll back the most current one so you cant get stuck in an infinite loop of dying. And something that might be a bug, on level 3 you can get boosted into the ceiling and just hang there for a while, maybe set the y velocity to 0 when you hit the top of the screen? Love the music too, good luck finishing the game! (And if you could help find bugs in my submission too that would be greatly appreciated!)