Congrats on submitting this. I like the urgency to get to the bottom since the platforms are slowly bringing you to the top of the screen and death. A little glitchy, and when running to the right, the animation looks pretty nice, but I think I saw him running backwards while moving forwards (glitch) ;-). I can understand why you have the block ability, but of course a jump or dash might be more realistic.
I had a hard time starting sometimes, maybe there is a long load time or perhaps focus in the window needed to be such that the keys could read? or mouse click? no worries though, glad you submitted your first game jam game.