To do level 20( nthe one with the pit and the door on the other side):
Just keep running and jumping off the edge.. Keep > held down and Keep pushing up and you shpuld make it.. if you dont understand.. Keep jumping of edge holding up. :D Glad to help.
I got one for ya... When chuck norris does a push up he pushes the earth down. The game is alright but i got bored after about the 80th one...... 4/5.... Nice jokes Btw