Die Rise Survival Strategy
The best way to survive a lot of rounds and not have to be trapped in a TIGHT space on the buildings, get the Sliqiufier and head for the Buddha room. This room is so big, you can make a zombie train and get a whole bunch of kills. As soon as you're down to your last clip on any gun, take out the sliquifier and shoot ONCE when you have the biggest group and no more zombies can spawn. The Sliquifier can collateral zombies taking out as much as 20-40 zombies without wasting so much ammo. This gun is SIMILAR to the Wunderwaffle and it acts like it but this time, the zombies don't stop and explode. They keep on going and may attack if close enough until they explode. This is now your chance to get the Slippery when Undead trophy by killing more than 5 zombies with a single shot from the sliquifier.
Hope this strategy gets you to rounds 25+ and please slap that thumbs up button if you like this strategy more thamn ever.
Also, if you want to play Black Ops 2 Zombies with me on PS3, add SquiirtleZ.
Added by: Modder_Dude0_0 Mar 21st 2013, ID#5256