[Update: This giveaway as ended.]

[Original Story:] Shacknews is on the hunt for zombies in the hidden world of Shangri-La, and we need your help. For this week's Shack Giveaway (have you noticed this is a weekly thing now?) we're giving away eight Xbox Live redemption codes for the most recent Call of Duty: Black Ops map pack.

The Call of Duty: Black Ops 'Annihilation' map pack adds four new multiplayer arenas to the best-selling game, as well as one additional zombie map. It's in that zombie map where we need your help to stave off hordes of angry undead soldiers.

Grab your favorite weapon and comment below for your chance to nab one of our codes (read the rules).

Entering the giveaway is simple, you just have to follow a few rules:
• Leave a comment telling us your favorite zombie killing weapon in Black Ops

• You must be 18 years or older and a resident of the United States or Canada (excluding Puerto Rico and Quebec)

• Limit 1 entry per person (Only your first comment will be counted)

• The entry period ends at 12:00PM PT Friday, 07/01/2011 This giveaway as ended.

• At that time, we will randomly select eight (8) winners to each receive one (1) Call of Duty: Black Ops 'Annihilation' Map Pack code for the Xbox 360 (MSRP $15)