It is a bit much to download so much for this. I do like the FX sounds though a bit more time on background and materials would go a long way... 

Straightforward platformer. Would be cool to see the theme used to extend the length of the map or give you upgrades or something. :)

Great SFX!!! Though you should try and implement the theme in a different way, and make the level longer, and add checkpoints, after the jam. Also here are some ideas on how to implement the theme even more:

1. Trick the player into thinking that he needs to get to the end of the level. That's what I did for my game.

2. Every time you die, give the player a tiny boost in speed or jump height.

Thank you!!!