7. Variety? No Thanks
As generic as shooters can get,
Aliens: Colonial Marines really takes the biscuit. It's not just plain in the visuals. But it's also boring to play. From the regular Xenos that jump into your gun happily, there are a few different enemies to steam roll over. Obviously there is a queen, and no prizes for guessing when you'll face her, but along the way you'll twice come across a brute that will actually put a strain on your almost endless supply of bullets. First there are the Lurkers who think hiding behind a chair is going to make them invisible and will wait to pounce resulting in a quick-time event to prevent them from eating your brains, but you can shoot their exposed heads when they're in cover. There are aliens that utilise their acid blood as a ranged attack by spitting it at you, which doesn't make sense as to why they would spit their own blood willingly. There are some very annoying Weyland Yutani Mercenaries who despite having guns still like to walk into bullets, and a cameo appearance by some strange zombie-like aliens (above) that explode when they get mad. Seriously.