Call of Duty DLC Rezurrection

This DLC (downloadable content) is focused on zombies with 5 maps 4 of which are from Call of Duty WaW to include Nach Der Untoten,  Shi No Numa, Der Rise, and Verrückt.  The new map is Moon which in my opinion is one of the most challenging zombie maps i have played.  It has one of the most challenging map layouts out of all of the zombie maps and if ur not carefull you will end up taking a wrong turn and be put in a corner with no escape.  On ther other hand this map is not for the easily spooked because zombies have a way of just appearing from nowhere and can easily ruin any effort to make and maintain a steady route to staying alive. If you can have the same 3 friends and yourself ofcourse, playing each time you can develop an easy routine but the difficulty is have those same 3 friends play with you each time so having to deal with people who may have never played before or people that dont like to play as a team is a more likely outcome.