Those of you having trouble, try using a walkthrough for part of the game to get a feel for how to progress, and then try again not following that same walkthrough (there are several completely different solutions).
And download maps, because it's really too much work to make your own and it's impossible without any kind of map.Yeah, they're mind blowingly ahead of their time in some ways, but sometimes in a "cart before the horse" sort of way, particularly when it comes to basic controls and such. "Press Shift-LAB to recharge your thrusters" What?

