This game is also available on Xbox 360.
Retro Game Cheats for Call of Duty: Modern Warfare 3 (PlayStation 3)
Effect: EASY XP
When:
Level 20, in multiplayer mode
How:
Once you reach Level 20 in Multiplayer mode, use the Specialist Killstreak package to get a lot of extra XP. Create a class with the Hardline perk and use the Specialist Killstreak package. You will get extra points at kills 1, 3, 5, and 7. It will also help you complete the perk's challenges and the Specialist challenges for each perk. You will be completing the perks, and each perk has a Specialist perk challenge to it. For example, if at one kill you unlock Assassin, you will be completing Assassin challenges while also completing the "Assassin" Specialist challenge. You will get a lot of XP as you complete these challenges in addition to the 200 XP you get for kills 1, 3, 5, and 7 each time. This works best in modes where you get a lot of kills. Additionally, you get extra points for kills 8, 9, 10, etc. as long as you have all the perks enabled and have not died.
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