Unfortunately bugs screwed over much of my attempts to play this: the intro scroll was off-centre and thus impossible to read and when you die it softlocks the game.
I assume that when you jump on an enemy, they die? It could really use some feedback on that, like a sound-effect or something.
Jumping into a wall causes the player to stick in place. Whilst this might be useful for a walljump ability it makes actually jumping onto platforms hell; if you're even slightly short, you're buggered. It would be better if it just slowed your fall rate instead.