Get back into vents
If you are in the level Facility, and you want to get back into the vents to hide or whatever, Go into the right cubicle and stand on the toilet.
You can only stand on one toilet, when you are on the toilet press and hold R, C-Right and push the Joystick left so you are turning in a circle.
Eventually you should rise up and be inside the vents, once you are up you must pull back on the joystick so you don't fall back down again.
Now you are in the vents with a gun and you can do what you want up there !!!
Added by: adamiscool Mar 22nd 2006, ID#5480