|N version||1.2 and later|
Method 1 (Easy)
Jump up the oneway platforms all the way to the top, as the gauss turret shouldn't be a problem. Hit the switch, wallslide, walljump off and hit the exit switch, then drop down all the way to the bottom, where you need to wallhug to stop your fall. This may be a bit difficult due to the two gauss turrets in the center, but with several runs of practice it is definitely do-able.
Method 2 (Most gold)
At the beginning, after leaping up the three platforms, walljump off the side and enter the corridor stocked with gold. The walljump upwards, hitting both switches, and then exit to the left side and slip down the oneway platforms to the exit.