Really nice one! At first, I thought that the game will be another "corpse is a platform" thing, but I was gladly surprised it wasn't!
- The jump and the overall movement feel a bit too floaty.
- IMO the player's collision shape should be a bit smaller than a whole block, because it is impossible to fit through a whole if you are the same size as the whole (say I'm trying to horizontally go through a whole of one block in size and I am one block height)
- I liked the sound design, particularly the jump sound as it sounded a bit silly but thanks to that it felt so casual and funny!
Very well done!
Also, can you please rate my submission?