|N version||1.4 and later|
From the start, go down the little ramp to your left. When the floorguard charges you, jump over him and run toward thel left wall. Jump off this wall, and then to the little flat part on your right, and then back to the left wall. Then jump away from this wall. You should land on the 45 degree slope of the platform directly to the left of the block that the drones circle. Hop up and down there until you can time it right. You should jump to the flat part, directly underneath the opener. Once you have it, haul back down to the gate.