|N version||1.4 and later|
Given enough time, just try to be patient with this level. On the first level, jump lightly on the bounceblock, then land between the first couple of mines. Quickly jump again to the second bounceblock, hopefully luring away the zap drone on the left side, and grab the switch. Carefully return. Be careful not to lure any of the drones onto the second level, which could complicate matters.
On the thwump part, there are various ways to deal with it. You could try to jump right over the thwumps though this is somewhat dangerous. An easier way is to bait the first thwump, then to jump off the 45 degree slope to pass the floorguard. Hit the terminal switch, then repeat to get back (or try to leap above the first thwump to the second one by walljumping).
The final part is a rocket part with variously positioned oneway platforms. Pre-determine a route through this part and stick with it; for example the following route will suffice. This is the last level of the episode, so do whatever possible to ward off the rocket.