Steel your nerves, soldiers. The undead are out, and tonight is their night.

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The dead have risen and they're hungry for flesh. In between last minute costume stitching in the trenches and repeat runs to the candy stores in the mess hall, we fully encourage you to load up your rifles and go knock out some zombies, lest they begin tossing us into the fire for a filling BBQ.

To celebrate this haunted holiday, and ensure that as many of you are out there as possible helping to keep the zombie population from getting out of control, Map Pack 1, 2 and 3 are being offered at half price until November 1st in both the XBL Marketplace and the Playstation Store (only in North America for PS3 owners).

So get out there and start clearing out the hordes. And most importantly, have a happy and safe Halloween.

Headquarters out.