Let me start off that I love Predator and Alien 1&2(I like Predator a bit more than the alien movies though). So after playing AvP 1 I got hooked. I couldn't stop playing. Having the power of the Predator at your very hands...amazing. But I didn't like that the Predator in AvP wasn't very true to the movies. Even small things like what color his health pool is to big things like no crouch jumps, not being very strong, and horrible cloaking(marines can see you even when you're cloaked half the time). Also the levels very rarely intertwined with one another.I also must say in AvP 1 marine mode was awful. I hated being marine.But don't get me wrong I loved the overall game!
When I got AvP2 I expected it to be like most movie and game sequels. Not as good as the first. Man was I wrong. The graphics are incredibly realistic. The plot is great. The levels are always intertwining, and the game is so true to the movies it makes a fan like me crazy about it. All the above I said Avp1 didn't have this game did. I guess we can attribute this to Sierra,the makers of Half Life. They took on AvP2 along with Fox Interactive and made this game great. Another thing about the first AvP. In Predator mode you never got to hop through trees. But you can in AvP2! I already beat Predator in AvP2, and am half way through in alien and marine(marine mode is like half life in this game...I love it). I don't know if I've lost you along the way but the point I want to make is that AvP2 is better than the first, and I recommend it to anyone, especially Predator,Alien, or even Half Life fans(but be warned, this game is not a copy of Half Life, it's much better!) And so 4/5 stars brings me to my conclusion. BUY THE GAME