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You have to unlock multiplayer.
THEY'RE ALL MULTIPLAYER STAGES
no but its cool
you can't.
you need to look at the awards and they will say like you have to get this amount of kills to unlock this weapon, you can only unlock on multiplayer. unless you are trying to get the award toys, then yeah you need to find them all in the campaign.
You unlock them by making progress in single player.
On multiplayer, it is unlocked at the start.
You can't
You haw to look on computer!
for multiplayer you must do it online to unlock them and for campaign it will unlock if you do what is required to unlock the camouflage.
No it isn't possible to unlock Devestator in Transformers 2 the game.
In Black Ops multiplayer you unlock the AK-47 at level 38.