Aliens vs Predator is a first-person shooter developed by Rebellion Developments and published by Sega. In the mission Refinery for the predator, the player will have to enter the refinery to find the alien queen but will discover that she has already been killed.

1. Jump over the gap and kill the four marines patrolling the area. Go to the left of the bridge and jump on the pipes below the bridge. Then, jump to the platform across, and on the ledge, under the building. You are now in the refinery.
2. Go to the building on the right and kill the two guards. Get on the second level and follow the path. Kill the two other guards on the floor below and interact with the generator to shut down the electric fence on the roof.
3. Jump on the roof using the platforms and interact with the power box to bring the crane. Jump on it to get on the other side. Kill the three marines that will come out of the building and enter the refinery.
4. Jump into the left pipe. Wait for the elevator to go down and jump all the way to the top, to the open gate. Use your cloaking device to hide and put mines to kill the four marines inside the room. Follow the path inside the building and turn left to enter a room where aliens and humans are fighting. Get on the platform in front of you and wait for the aliens to come. Protect and counter attack to kill them all.
5. Once the room is clear, exit through the opposite door. Kill the xenomorph in te hallway and follow the corridor with the two vehicles. At the end, you will see a room on fire. Follow the path in the nest to the Predator's dead body. You will get the Smart Disc.
6. The refinery is collapsing and you have to escape. Jump over the gap and fall into the hole. To escape, you have to locate the pipe marked on your screen and hit it with the Smart Disc. Do it as soon as you fall. The water will extinguish the fire but it takes some time. Aliens will appear and start attacking you. You can defend yourself but they will always keep coming. Run around the room to avoid confrontation and when the path is clear, get out of the room.
7. Continue to run through the nest to escape and clear the mission.