Хм... Дай подумать... Какой хоть номер миссии... А тоя тож играю... на эмуле
нащёт миссии, надо подумать 
А вот коды:
Unlock Weapon Pack 1:
While playing, press R, Up, B, Down, Left, R, B, Right.
Unlock Weapon Pack 2:
While playing, press R, Up, A, Down, Left, R, A, Right. Unlock Weapon Pack 3:
While playing, press R, Up, Y, Down, Left, R, Y, Right.
Unlock Weapon Pack 4:
While playing, press R, Up, X, Down, Left, R, X, Right.
Full Armor:
While playing, press L, L, R, B, B, A, A, R.
Full Health:
While playing, press L, L, R, A, A, B, B, R.
Wanted level up:
While playing, press L, L, R, Y, Y, X, X, R.
Wanted level down:
While playing, press R, X, X, Y, Y, R, L, L.
Explosive Desert Eagle Shots:
While playing, press L, R, X, Y, A, B, Up, Down.
Sunny Weather:
While playing, press Up, Down, Left, Right, A, B, L, R.
Extra Sunny Weather:
While playing, press Up, Down, Left, Right, B, X, L, R.
Cloudy Weather:
While playing, press Up, Down, Left, Right, X, Y, L, R.
Rainy Weather:
While playing, press Up, Down, Left, Right, Y, A, L, R.
Thunderstorm Weather:
While playing, press Up, Down, Left, Right, A, X, R, L.
Hurricane Weather:
While playing, press Up, Down, Left, Right, B, Y, R, L.
Foggy Weather:
While playing, press Up, Down, Left, Right, Y, B, R, L.
Прости английские... 
