Map Pack 2 will contain 4 new maps, ‘Banzai‘, ‘Corrosion’, and the bombed out submarines of ‘Sub Pens’, the pack being completed with the Zombie Swamp ‘Shi No Numa’. The pack also contains a new weapon, the Wunderwaffe DG-2 and new flaming hounds and traps.
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New Characters in Zombie Map

The Call of Duty: World at War Map Pack 2 will include 4 new maps, 3 being mulitplayer and 1 being a new zombie map.  The new zombie map “Shi No Huma”, will take place in a swamp and have exploding hell hounds.  There will still be Perk-A-Cola machines and the addition of a new weapon, a zippline and more zombie traps.  Here is the list of Achievements/Trophies that will be added with the map pack this month:

Hammer Time
Repair 200 window boards in a single game. (Map Pack 2 only)
Its a Trap!
Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)
Weapon of Minor Destruction
Kill no more than one zombie with a nuke. (Map Pack 2 only)
Perk-a-Holic
Have all four perks simultaneously active in a game of Nazi Zombies. (Map Pack 2 only)
Fertilizer Man
Kill 200 zombies in a single game. (Map Pack 2 only)
Deadhead
Get 150 zombie headshots in a single game. (Map Pack 2 only)
Big Baller
Earn 75,000 points in a single Nazi Zombies game. (Map Pack 2 only)
Big Brawler
Get 10 consecutive zombie melee kills before Insta-Kill expires. (Map Pack 2)
Soul Survivor
Reach round 15 in Nazi Zombies without getting revived. (Map Pack 2 only)
Dead Air Secret
It must have been a wrong number.