Got to level 41 with 4 people

We had been playing like 4 hours and got late so we decided to down our selves,

At lvl 38, The zombies would not go through any barries

If we had time ,Could have made it to level whatever, Really weird, Oh well, lol.

I made to 31 with 3 people by running around in circles with browinings, mg's, and ray guns, oh yeah also the fg (we seemed to always be able to get those guns no matter what)