All Maps
When playing the "Jungle Storm" campain, play as a support troop. Pause the game and enter the following code: R1, R1, R1, R1, X, O, L1+L2.
Unlock bonus:
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.
For all multi-player maps, win each campaign under the recruit and veteran difficulty setting after completing each "X Objective" in each mission.
For all the specialists for quick missions, win each campaign under the elite difficulty setting after completing each "X Objective" on in each mission. In normal campaign mode, a specialist is unlocked for each "X Objective" completed as you progress through the game. If a specialist dies in campaign mode, you will not unlock him for quick mission mode.
For all weapons, unlock each specialist at least once in campaign mode.
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