THE WORSE SEQUEL
The first level is really boring, but don't get discouraged because the last levels can get fun. The AI is really stupid and the game is very easy even on the hardest mode. The game isn't that realistic.
Hmmm... Multiplayer. The multiplayer is terrible! The game can not start until at least 4 people are playing. You might be saying, that should be easy to get into a game with then...
The game is very short. I beat the game in about 2 hours. I wasn't even rushing through it and I hadn't even played it before, so I didn't know what I was doing.
This game lacks variety of weapons. There are only about 5-6 weapons in the game. The pistol, rocket launcher thing, some shotgun thing, an assault rifle, a sniper, and some other guns.
The story line doesn't make any sense. Everything happens so quickly.
Spoilers may be ahead, I don't even know
This is what I think the story line was->-> You go to area 51. There are aliens attacking people. You save them. You leave a team mate behind. You fight random monsters for 6 levels. You and your team mate fight. You kill him. The game ends.