|N version||1.3 and later|
Method 1 (Easy)
Jump up to the exit switch. Kill the rocket, then either jump to the door, or if you're greedy, jump at the gold column between the mines. Or you could attempt the gauss turrets at the side for even more gold, though it probably won't be necessary.
Method 2 (NEHS)
This level is rather easier, but it's still nowhere near a cakewalk. From the start, head to the left and enter the jumping complex. Jump onto the platform with the zap drone, jump to the left onto that platform, and keep heading up. Avoid the rocket when it gets to you. When you've gone as high as you can go on the left, time your jump, and leap onto the third zap drone platform. Jump immediately onto the awning, and activate the terminal.
At this point, what you want to do is entirely up to how greedy you are. If you're not greedy, jump across(avoiding the rocket, of course), and land on the left wall of the pit on the right side. Jump down the golden hallway, and slide into the exit. If you're very greedy, jump across, and head into the pit, collecting the gold and evading the gauss turrets in addition. Launch across the pit, jump into the golden hallway, and leave this level behind in the dust.