Kino: After killing hellhounds, random zombie drop
Five: After killing Pentagon Theif, random zombie drop
Ascension: After killing all monkeys, random zombie drop
Call of the dead: Random zombie drop
Shangri-La: Random zombie drop, Monkey Perk change

if you play online tell a friend to lay in a coner the dive on him the you get lots on max
ammo

u can get max ammo from the hell dogs or a random zombie :)

;);) ;) ;) ;) ;) ;) ;) ;)

Just shush and go into the world of not playing video games all the times!!! :o

Wait till the last zombie for the round(it will go until you die and dont kill the last
zombie) make him follow u to a the mystery box still dont kill him before you get the
mystery box you shoot the zombies leg 2to 3 times and but the mystery it will even get 30%
chance to get a good gun. Buy it while the zombie it swiping you u run whithout geting it
kill the zombie get the gun and bang you get unlimted ammo... I got the ray gun at first
then i did it again i got the ak47 unlimted ammo and i got to level 43 hahaha i was so
happy and i sreecnshot it 10 times :)

I tried it and it worked! That was awsome!!! I am going to put # so i can post my asnswer
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Trust me, i've done everything they've said before and it doesn't work you would have to
have a mod menu or just wait 'till dog round, monkey round, etc.