Ah, finally completed it. I actually saved right after getting to chapter 13 because I didn't want to risk it. I can't believe how easy this actually was. Every area I was afraid of wasn't too much of a problem, even with me being all tense and stuff. My heart was racing at the final flight and I almost crashed. Now for zealot and the foam finger!
My load out: Plasma Cutter, Detonator, Force Gun, Contact Beam (starting at the mining elevator).
To everyone going for this achievement: It isn't that hard! Just keep your cool, stock up on health and ammo, and watch videos
(preferably several) and you should be fine.