Enter the following codes at the Mission Select screen. If done correctly you will hear Ethan say 'Ahh that's better'.
Press R, Z, C-Down, R, C-Down.
Unlock Infinite Ammo:
Press C-Up, Z, C-Left, Z, L.
Start with Rocket Launcher:
Press R, L, C-Left, C-Right, C-Down.
Start with Silenced Pistol:
Press C-up, L, C-Right, C-Left, C-up.
Start with UZI:
Press C-Right, C-Left, C-Right, C-Down, R.
Start with 9mm Pistol:
Press R, L, C-down, C-up, C-up.
Added by: Sanzano Dec 13th 2006, ID#5788