If you have a pair of Xbox Live accounts or PSN acc's, you can try this technique. If one account is of a lower rank than the other, you can give the lower account an instant perk of your choosing. Go onto your higher account then When you unlock something at the end of the game (such as the Claymore Perk), immediately log out of your account and sign into the lower account. Head to the game lobby and press Y, and the game will have unlocked for this particular account whatever you unlocked with the first account.

NOT FOUND BY ME

__________________

Uh , I tried this on ps3 , That Doesn't work.
Maybe for Xbox only.

I doubt this is possible on the PS3. To do it you'd have to come out of the game, switch user, sign in again and then load the game up. You'd have to re download the game settings and everything.

__________________

Finaly a glitch thats Xbox 360 exclusive then, you've all had your hacks for ps3

I found this posted somewhere else with xbox put only into it, so I decided to edit the PSN part into it seeing if maybe it would work there too

__________________