Look In the Cheats Section at Dark Lord of the Sith's Article

the cheat is when your playing the game type in: up up down down left right left right select strat but im still trying to figure out what the select button is do you know i posted the question

all of the weapons means unlocking them. once you have destroyed a copter then the secert weapons will fall.

The Cheat Is UP UP DOWN DOWN LEFT RIGHT LEFT RIGHT SELECT START And Then It Will Activate Hope This Helps.

Sorry Its Actully UP UP DOWN DOWN LEFT RIGHT LEFT RIGHT B A SELECT START
And It Doesn't Mean You Get Them In Your Weapon Inventory It Means You UNLOCK Them All You Have To Shoot The Helicopters.