Unlock all levels
Select the Cubans and play as a support troop, then pause the game and press R1, R1, R1, R1, X, Circle, L1 + L2.
Online Voice Chat For More Than Two Players
On the server PlayStation2, press R1(2), L1(2), R1, L1 at the 'Press Start button' screen. The sound of a drum will confirm correct code entry. Press Start to continue with your server setup. The code does not need to be entered on the client PlayStation2s that will join the game. Online voice chat is normally only available in two player online games. Allowing it to be used by more players will effect bandwidth and game play quality. An upstream bandwidth of 512 Kbps is recommended.
Unlocking Bonuses
Successfully complete a campaign under the veteran difficulty setting to unlock its corresponding bonuses.
It is not necessary to play under the elite difficulty setting to unlock anything.