Remarkably dull.
I wouldn't say any part of me utterly disliked watching 'Aliens vs Predator: Requiem', though it has to be said that it is not a good film at all - it's almost impressive how uninteresting it all is. Thankfully it is relatively short at round 90 minutes, any longer and I may have hated it.
The main negative I hold is the lighting, or lack thereof. It's such a visually dark movie, so much so that you can barely tell the two titanic creatures apart at most times. There's also a supposed-to-be cool reveal at the conclusion, yet you can barely see who they are revealing. Very odd choice.
The plot and its characters are extremely forgettable, it's just a standard monster(s) attacks small town flick - something we've all seen before. Think 'Eight Legged Freaks', but worse. As for those onscreen, John Ortiz is the standout, though only if I had to pick someone. The whole story with the Howard brothers is so mundane and poorly portrayed.
A rightly panned movie. The worst work of either franchise.