How do you beat the is it the end level on adrenaline challenge

At the very beginning of the level where there's a spike thing coming out blocking your way, make sure you approach it slowly. When you reach it, tilt the front of your bike up but make sure your back doesn't hit the ground. After you get pass that, go at full speed off the ramp until you land on another ramp. When you ride up the wall, make sure the "rail" at the top going off of the side has your tires in it. The last hard part is getting pass the small cracks in the floor. What I do is ride backwards and when my back tire is over the crack, i let my back swing under the crack and i press the key (left or right) to go backwards. Just do that for all the splits in the ground. After that, it's pretty much smooth sailing. Good luck!