Really cool game! I like the art style and the voice lines are interesting.
Here are my possible improvements:
1) Please add the option to jump by pressing space
2) the jump feels good, but the player is sliding around like he is on ice (i get that it is a rage game but still
3) the weird controls are a good challenge for 1 level but please don't make me play like this for any longer
4) maybe change up the level (just a bit) as well or (even more rage-game like) reveal secret enemies / obstacles