The Orange Box: Half-Life 2
Enter these at any time in the game:
Invincibility L,Up,R,Up,L,L,Up,R,R,Up
Health Up,Up,Down,Down,Left,Right,Left,Right,B,A
Ammo Restore Y,B,A,X,RB,Y,X,A,B,RB
Enter these at any time in the game:
Invincibility L,Up,R,Up,L,L,Up,R,R,Up
Health Up,Up,Down,Down,Left,Right,Left,Right,B,A
Ammo Restore Y,B,A,X,RB,Y,X,A,B,RB