I don't really understand it. the graphics are i have to admit are astounding. But i really dont understand what it is that everybody likes so much in this game. The weapons except for the gravity gun are quite standard nothing really special. I was annoyed by the fact that when i didn't need ammo or medpacs, they were thrown at me. And when i desperatly needed them i couldn't find them anywhere. I really don't like the checkpoint system they used, where you do nothing for a while and then hell breaks loose. I felt like i was running around sometimes murdering nothing, for too long. Normally whit great games i can't stop playing, but now i play like an hour and i get bored everytime. Though i didn't actually finished the game, i'm still totally in the dark story wise, i don't really understand why i should continue playing.
Though multiplayer is quite cool, and the gameplay is also smooth, graphics are amazing i find people don't judge quite realistic. Just throwing them 10's around, i think is a little stupid.