Okay so many people know that you can get them when finish the campaign but i have the cheats of how to get them for free.You are probably wondering if these cheats will lock your achievements well they wont they will actually give you achievements.

First stepZ:at the main menu look down with rs when you see the hands press lt and rt repeaditly until you get out.

Step 2:Look for the computer when you have found it type these things:3arc unlock and the second cheat is: doa

You will automatically have the maps but in the second cheat you have to atleast play the first round on the arcade game.

You will have the maps five and arcade

Enjoy and please thank topic.

Ps:what is your favorite map.comment what it is.