I don't understand why there are so many bad reviews on here. I thought it was really really good and a contender to the first movie.
The character development was insane and provided depth to the storyline making it even better than it already was. Lot more fast-paced and exciting than the first one but the deaths were a little extra in some of the scenes.
Only thing I would improve is it leaves you not knowing what's really going on. You never end up seeing the creature or finding out where it came from which kind of sucks.