The inside of the alien colony is just incredible.
If by "incredible" you mean "sucked balls" then yeah.
I don't see why everyone wets themselves over the portion of the game inside the alien craft. To me it was the most dull, ugly looking, poorly designed portion of the game. I hope the level designer shot themselves after stuffting that part out.
Worst offender was the end portion of the alien ship in which you have to wait for some arbitrary reason for some really slow moving machines to move just to open a door whilst being mildly perturbed by some aliens.
Then after that we have the classic "save-your-buddy-who-is-suddenly-incredibly-vulnerable" section of the game. Big, black, all-muscle commando leader all of a sudden loses his balls when is battery gets a little low and he catches a chill.