Beat Classic Mode on hard as Samsus 5 times, you will then be prompted to press the following buttons in EXACT order, or else your game will be permanently deleted, and your Nintendo will self-destruct; Z, L, R, Z, L, R, Z, L, R, A,A,A,B,B,B,A,A,L,A,R,L,A,Z,Z,Z,A,L,R Then you will enter a special arena with a halo in the background, and will have to fight Masterchief, who has 5 lives, A spartan Laser (Instant KO), Plasma Sword(Instant KO), Gravity Hammer (Instant KO), and Grunt punt kick (Uber instant KO). You will only have one life, if you beat him, congragulations, you just wasted several hours of your life to get a pixel representation of the Chief.