This level can be confusing due to the large number of switches; you do not, however, have to get all of them to get to the exit. The easiest (and only) ones you need to get are, in this order, the topmost switch, the exit switch (obviously) and the left switch on the middle level. While doing this, try to avoid being trapped by the guided zap drones in the channels on the lower level. Other than these considerations, the rest of the level is rather easy and can be beaten with a little practice.