Leaderboards, super polished main menu with cute little things like "DO NOT CLICK HERE" in the corner or clicking the logo in the main menu makes it do stuff. That is amazing for such a short jam.
Also level 5 "press space to skip if you're a nerd" LOL, great way to discourage players from skipping cutscenes.
The only criticism I have is text was very hard to read, I had to retry levels each time there was some text in the level, cause I would need to stand still right next to it.
Other than that cool game!