@vince Spoiler I didn't, I used it to get down after pushing the first ball. Then the autopilot to go up agsin to the second ball. How do you go from one to other without the exploit? Or perhaps I named wrongly the exploit to fall down from a stair or metal tile?
@chemi Spoiler: Intoxicating Pillar I'm not sure which falling spot you're referring to but if you're crossing the metal pillar (beside one of the balls) and falling off the stone stair block off the gamespace, then the last proposed name for that trick is Intoxicating Pillar. This trick was introduced by @meko in his Mini Pagoda level.
@nGord Spoiler: Intoxicating pillar??? First time I hear it. Do we have different names for tap on a point and before arriving to that point tap again so B falls? I am referring to the first ball. After you push it down to a hole near the elevator, B goes up were the ball was located and arrives to down stairs that goes nowhere. Using whatever exploit name it is, B can fall down and go to the begining again.
@chemi You are doing the right thing but this is différent from the tripping on air trick because you don't have to tap twice on the stairs. @nGord is right.
Passing the zappers is a nice challenge, but getting of the roof after the first ball was unintuitive to me. I've read now that falling from the stairs is required. I figured I could just as well boogie bot to the second ball and skip the bots completely. Do note that I passed them a few times on earlier attempts.