Enter 2ndsquad as your profile name to unlock all levels, old movie, infinite ammo and supersquad.

Item codes:
Use one of the following entries with the summon code.

gbxInventory.PickupWeapUSBar
gbxInventory.PickupWeapUSBazooka
gbxInventory.PickupWeapUSColt1911_
gbxInventory.PickupWeapDEFG42_
gbxInventory.PickupWeapDEK98Sniper
gbxInventory.PickupWeapDEK98_
gbxInventory.PickupWeapUSM1_
gbxInventory.PickupWeapUSM1Carbine
gbxInventory.PickupWeapUSM3A1_
gbxInventory.PickupWeapDEMP40_
gbxInventory.PickupWeapDEP38_
gbxInventory.PickupWeapDEPanzerfaust
gbxInventory.PickupWeapUSSpringfield
gbxInventory.PickupWeapDESTG44_
gbxInventory.PickupWeapUSThompson