It's a good start. A lot of the basic requirements for the game weren't done yet, but understandable given the scope of this game for a game jam is rather large. I would increase the speed of the running and play with it so that it is smoother. Running should increase velocity, and jump shouldn't increase unless you are running faster. Also, after dying, if you are constantly holding shift, it will no longer detect the run action unless you let go and re press it. Just some things that I feel would improve the game a bit. The graphics were good, no complaints there. Controls were a bit iffy, but since arrow keys were allowed I made it work - A and D would not work, it's too cramped.