Good but mad short!
Graphics and physics is awesome and no comments on them, a lot of stuff already have been said.
Weapons ......Gravity gun!!!!! whole fun and you will need to learn use it correctly, otherwise, you will be useless shumack....
Story line will unexpectedly turn and some of main characters will..heheh...well i am not going to tell you, better play and enjoy! I hope next HL 3 !!!! maybe maybe will be long enough to satisfy all people need in kiling zombies and and figuring out the quests! Amen to that!!!!