I've just seen it, and holy shit! It truly is that bad. The characters, every single one of them, are full blown idiots. The only guy who is not an irrational stupid, is the Captain. Until he pointlessly kills himself and the two others. Autopilot anyone?
Even the Engineers were stupid. I guess they found the black goo and those vagina cobras just as cute and played around with them.
Speaking of Engineers... it would have been something had the Engineer they've woken up in the end actually recognized friend from foe. He wakes up after 2000 years of sleep. Shaw talks to him, gets beaten up by the other guys. I would have expected that he would have at least TRIED to understand what the hell was going on all of a sudden.