Dude, really enjoyed this although I couldn't finish it cause I suck sadly, haha!
Really simple and challenging level designs, super-fast restarts made for a really cool hook. The only thing I didn't like was that checkpoints were a bit too hard to reach sometimes, and the difficulty curve could have been a bit smoother. I like how you build up the mechanics and challenges though. Just ramp things up a bit though.
I think one cool idea would be if the dead bodies could actually act as obstacles and kind of help out if you die too much at roughly the same spot. Could be a cool way to give people who get stuck a bit of a helping hand but not too much. Also, add a bit more juice to the deaths! More silly blood splatter and sceenshake! More sound effects layered! Make it more stupid!
Overall, really fun!