GoldenEye 007 on Nintendo 64 - 00 Agent Mission 7: Cuba - part iv: Cradle

1. Destroy control console
2. Settle the score with Trevelyan

a. Destroy control console

Start by taking the armour by backing up to the right. After following the long path, going down the big slope and down the small stairs, take the left door and destroy the 2 drone guns to be safe then blow up the console. You have 3 minutes to do this once Trevelyan activates it, which is plenty since if you skip the cutscene he will only have a few dozen metres head start.

b. Settle the score with Trevelyan

From the console room exit through the door opposite the entrance. Trevelyan is at the bottom of the stairs. Try to shoot him in the head without showing yourself (stay a little to the right of the descent). Then you'll have to wait for Trevelyan to stop at one of his positions and shoot him again. He stops either at the bottom of a descent, in one of the 2 closed rooms, or at the top of one of the 3 climbs. Once you've hit him the first time, it's better not to follow him and go to the other closed room where he should arrive. I personally advise never going down and shooting him from above each time he's below. If he enters a room, shoot immediately. Each time he'll say a phrase. When it is: "Finish the job James, if you can", you can finally go down.

Take the small stairs and jump into the hole in the small room to settle your score with Alec Trevelyan. Aim well to land on the small platform and try to dodge his shot or advance towards him shooting. He is invincible for a short time but dies easily. That's it, you have finished the main story.