I hate platform games and I especially hate jumping in platform games. But.... you made it bearable by allowing R to restart the level immediately if missed a jump and for not making death be a "back to the beginning" thing.
I have never been happier to see some checkered flags tho!
Oh and thank you for using very sensible default controls. I love it when I don't have to read any instructions to play a game!
First GWJ entry? Well done!