Perfect Dark/The Duel

"THE DUEL" is a special assignment unlocked when the player earns a bronze medal for every weapon in the firing range. The entire level takes place in the holodeck in the Carrington Institute. There are three objectives, and you get a better rank depending on how many you complete. Complete the first objective for Agent rank, the first two for Special Agent, or all three for Perfect Agent.

Agent
You start off facing a dataDyne guard back to back, western style. You will automatically walk forward. The goal is to turn around and kill the guard before he kills you. The catch is, you always die in one hit. When you turn around, he will jump to the side and try to shoot you. Kill him and the mission is done.
 * Defeat the dataDyne guard.

Special Agent
You'll see the same cutscene as last time. After completing the first objective, turn around and Jonathan will be gone. After a few seconds, he'll roll out from around a corner and attempt to shoot you. Here is a major glitch: Jonathan can't hurt you. Move the aiming cursor over him and it turns blue, indicating he is friendly. Rare forgot to make him hostile. The only way he can kill you is if he punches you. Shoot him to death and you are done.
 * Defeat Jonathon Dark.

Perfect Agent
Once again, you see the same cutscene. After completing the first two objectives, you'll face Trent. He is very accurate with his Magnum, so run around the corner closest to you. Trent doesn't move, so go to the other side of the wall you went behind. You have to leap out as fast as possible and kill him very quickly.
 * Defeat Trent Easton.