I absolutely love the player death scream, really funny and the design of the monster is simple but terrifying. I managed to get to 800+ once  but it seems to be very difficult (or I'm just not very good) so I think the platforms disappear speed should be based on the height the player has reached. What I mean is when the player starts it should be slow so the player has a lot of time to get used to the jumping but as the player gets higher the platforms disappear quicker meaning every mistake will result in less time to react. Also a double jump would be nice. Overall a solid foundation for a game and a fun experience. Good Job.