We're now only days away from the release of Crackdown 2, and in a stroke of corporate synergy, Microsoft Game Studios has hatched a cross-game promotion between Ruffian's impending sandbox shooter and the recent HD remake of Perfect Dark for Xbox Live Arcade. With a Crackdown 2 save on your console, you can unlock a new playable character in Perfect Dark: Agent 4.

No codes, no impossible speed runs -- Agent 4 is unlocked in Perfect Dark's Combat Simulator (multiplayer mode) as soon as your Crackdown 2 save is detected. Happy hunting, agents!

This article was originally published on Joystiq.

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