Jhoh Creexul wrote:

End-- In the end, you kill a final boss and win. Then the credits roll, you push "esc" and hit the "quit" button. Then you go back to Windows, wait for the game to fully unload, and then check something out in your personal folder or go on the web or check your mail.

By the way, that last part was a spoiler, so don't read it.

Black ops-- They fly around the room firing at you, and are completely invisible at all times. They don't fire with tracers either, so you can't see their bullets. In fact, when you're shot by them, your blood becomes invisible, and your HUD doesn't detect it. The bullets that the black ops are using also have some complicated new technology used by them (in the game story at least) that keep your HUD from detecting you've been shot, so your health and armor don't even change when you take damage from them. Their bullets will kill you in about ten shots, so you better keep on your toes!

They are invisible because they position themselves in front of the pupil in your eye which you can't see out of. This combined with light bending technology encased in their giant bouncing chests (yea, nice one valve). Of course now the black ops chicks are like anime characters, with even bigger night vision goggles and big flabby titties.