I really enjoyed this game! Although a lot of games in this jam have used the same "use your past deaths as a platform" mechanic, yours definetly stands out. It constantly introduces fun, new mechanics and it's great, but i think the level design goes often in the "dangerous" side, and past level 3, levels felt like they lasted longer than they should've, because of how the player is wider than he is taller i spent alot of time dying, coming back then dying again just to build a platform for me to jump on.
Overall for a jam game this is excellent, great job!