Just great =)
First of let me say "I hate you!" This is not meant in a bad way :p, I really love these old school influenced games and you made one so hard i cant beat it! ^^
Im guessing you made the controls the way they are by purpose? You gotta be dead serious with every thing you do else you'l end up doing a lame jump and dying :)
Graphics 5/5
The graphics are totally rad! Old school, Love the animation of the crab when you jump on his head, Just that animation alone is worth playing this game :D
Difficulty 1337/5
First of you need some time to beat this game, Dont expect to beat in in your first 10 tries, Im at my 200+ something and haven't beaten it yet ^^
So far ive gotten to the part where all you can stand on is the bricks that breaks apart.. Hard >_<
Overall 10/10