In case you're still playing Call of Duty: Black Ops, you might want to grab the latest update for the shooter (still incredibly popular, by the way). Here are the changes that come with the patch (v1.15):

- Addressed various Zombie Moon map exploits and glitches
- The “They are going THROUGH!” achievement now properly unlocks in Steam when player kills more than five zombies with the Gersh device
- The Zombie Moon Leaderboard scores will not be overwritten with the newest stats if the stats are lower compared to the previous ones
- "Mule Kick” perk machine is now available on all Zombie maps
- Mods: Increased menu asset limit

The update is applied automatically via Steam.