What is the code to unlock der riese in black ops?

Answer 1

There is no code to unlock it is not there to unlock except in the prestige and hardened PS3 and Xbox 360 editions

Rezurrection DLC will include the 4 WAW maps Nacht der Untoten, Verrückt, Shi No Numa, & Der Riese along with 5 new maps including zombie map Moon

When you purchase the Hardened or Prestige editions for the PS3 and Xbox 360 you get a one time use code for the 4 WAW redesigned zombie maps that can not even be used again even by the original purchaser or someone who buys the game used.

But if you type in 3arc unlock der riese in says code enabled

This only opens Five and Dead Ops Arcade and does not open Der Riese, Shi No Numa, Verruckt, or Nacht der Untoten