THE GOOD: AvP novelty is cool, playing as Aliens rules, ExoSuits are awesome
THE BAD: Generic units, playing as Marines is bland, sub-par audio quality
SUMMARY: Let me start out by saying that I'm a huge Alien, Predator, and AvP nut. That instantly makes me biased in favor of this game. I held out on buying it for a very long time, but I ultimately broke down and bought a new copy of the game recently. While AvP: Extinction could have been an absolutely stellar game, it ultimately comes across as a reasonably mediocre real-time strategy game.
The plot is pretty basic. It all takes place on the planet LV-742, a Weyland-Yutani mining colony. Predators have been hunting Aliens for a long time, humans show up and have an Alien infestation problem, all three races fight eachother. The missions provide some insight into the grander plot, but you only really get a true sense of what's going on if you beat the campaigns for all three races. Even then, the storyline is quite bare-bones compared to...
THE BAD: Boring gameplay. Graphics aren't so great. Combat System is really really bad and not fun. Very short Due to the Lack of Missions. Lack of Multiplayer.
SUMMARY: Like the title says, please do not try this game. It is very boring and is not even worth looking at. It is not an action game it seems like more of an RTS style game. I love RTS, but console version RTS style games never seem to be all that great. It is also too short. There are only a few missions for each species(Predators, Aliens, and Humans). I wish it were a better game. I liked the concept Aliens vs. the Predators vs. the Humans, but it doesn't make up for the poor gameplay. As a first or third person shooter the Aliens vs. the Predators vs. the Humans concept would have been very fun.
Just walk past the game when you see it. Don't even stop to look at it because it is not worth your time.