Surprisingly, the game is not as fun as it looks from the outside. Especially the marine part was horrible. It has an extremely unbalanced difficulty and the weapons have no effect on the predators or aliens. On the other hand, the gameplay is very repetitive. The marine part was so bad that it completely killed my desire to see and experience the other parts of the campaign. If you are going to play this game, I suggest you skip the marine part completely. It's not fun and a waste of time.