guaranted you get to level 45.. (cheesy pic of it)--> ____________| |_______________
1. go to big box on nightmare -- ||--
2. kill the guys there except one || <-- (u here)
4. in the middle put a block on either side of you, and shoot out the | |
walls on your side ||
5. The zombies will line up because of the walls you put and the ___||___
railgun will not break them, so you just shoot once and kill ---------| |---------------
atleast 15 and it doesnt break the wall so they never escape then shoot the other guys and so on.