One of the best First Person Shooters Yet
First, the "Evil AI" presents an interesting challenge even for experienced gamers. It has the element of surprise that most games need. However, after the levels are beaten, the AI goes away, and if you play the levels over, it is very easy to expect what is coming.
The melee attack is the big part of the game. In all of the previous games that I have played, the only way to use a melee attack is to either switch to no weapon, or to run out of ammo. Why anyone would switch to no weapon, I don't know. So overall, this game is very good.