Mobile Suit Gundam: Crossfire (PS3)

Kampfer
Achieve the rank of "Lt. Colonel" in the Zeon campaign to unlock Kampfer.

RX-78-2 Gundam
Achieve the rank of "Colonel" in the Federation campaign to unlock RX-78-2 Gundam.

Unlock Amuro Ray
Beat EFF campaign on Very Hard mode once, and load the clear data.

Unlock Char Aznable
Beat Zeon campaign on Very Hard mode once, and load the clear data.

Unlock Fraw Bow
Beat any campaign on Very Hard and load the clear data.

Unlock Gundam
Reach the rank of Warrant General.

Unlock Kai Shiden
Beat any campaign on Very Hard and load the clear data.