start off go through the pipe, drop down get the metal ball, (the blue thing) push the metal box towards the metal railing, push it against that brown thing.. roll back on yourself and push the 2 brown boxes as far as they can go, get the normal ball (right next to the brown boxes).. go all the way back to the metal ball part, and go on the lift, which takes u to the top, where u must get the metal ball and push the boulder down the pipe, and then onto the railings, the boulder will go all the way onto the button, and activate the lift.