18.2. The Forkstop: Part 2 | Campaign Duke Nukem Forever Guide
Last update: 11 May 2016
Right after you pass through the gate, go towards the lift and lower the forklift. Get inside and drive it down the corridor, driving over Pigs on your way. Kill 6 of them this way to earn Fork the Pork.
Inside one of the rooms to the left of the main corridor you will find the Freeze Gun. After reaching a fence, get out of the forklift and jump over using the pallet on the second one.
You will reach a dark corridor with a red warning light visible on the other side. Go inside the corridor behind the door marked with this light and find the dispatch room at its end. Before heading inside, mine the corridor with pillars that you just came through, if possible.
Use the switch in the dispatch room. Large Pig forces will enter the hall and some of them will head towards you through the corridor that you had presumably mined. Once you get rid of them, you will have the chance to earn one of the most difficult to find achievements in the game - Companion Barrel [Chapter 6].
After taking everything you want from the secret closet, go inside the opposite elevator.