Great stuff
For a first game, you've really done something special.
A few issues with the gameplay, as the character would sometimes be unable to do a "quickjump"(jump-land-qucly jump again on flat surfaces) and some of the issues with the slopes.
I abso;ute;y love the addition of a "chicken mode" for those of us whose old, decrepit hands aren't as quick as they used to be.
All in all, you should be proud of your creation.