[DemonBoy113]

Hmmm. Ok. Here's some help.

Wait for intro.
Walk towards first two enemys.
Kill enemys.
Turn left, walk over to power switch.
Turn off Power.(Press E)
Walk in front door.
go to end of hallway.
Strafe right until u can see enemy in room.
Kill him.
Go to the next door.
Kill enemy in corner.
walk through until the weapons room.
Kill scientist(optional)
walk up th white box.
Plant Bomb(Press E)
Exit building.
Go to helecopter.
Escape(press E)

I dont think i explained what to acctually do. I tend to forget that others don't know exactly how to play the game.