Wait game, we have it on eG, or is it the testing one? and where is the one you found?

At the end of hall in the underground where the bridge is, you have to shoot one of the buttons on the left.
Outside left corner in a tree.
2nd floor women's bathroom in a corner right, on a power outlet.
Right torch by Half life 3 room door.
The end of the train tracks in the corner.
I have no idea how you can actually teleport in.

next you take the cart on the right side next to the electric fence, and drag it to the red x at the corner of the parking lot. prop fly straight up, and it takes you to a room with a wall. hit the wall till it breaks, and step into the laser. then you win.

btw game me mash and rig tested it, works fine.