To unlock the whip you must first beat Santa by collecting reindeer antlers and then buying the reindeer boost trick. After this you hit elves at him with your hat and beat him in a downhill trick tournament. You then proceed to the next level, the jungle world. Now you hit trees and collect bananas. Once you get 10 you get a special hat that allows you to collect minimonkeys. After you get 10 by hitting trees your enemy boss "Raptor" will appear. To beat him you must wait for him to jump onto your platform and then throw minimonkeys at him so he will eat it. While he's eating it you have to hit him with your bat simply by swiping it at his direction. Once you beat him you can buy a whip for 45 000.