So I have found a glitch on the Combat Arms: Zombies App. You can either have a jailbroken iDevice to get the app for free or just pay the $7 fee once. Ok, so, once the app is downloaded you want to open it and complete one whole NORMAL or higher difficulty game. I'm not completely positive if you must complete all 10 rounds or just start the game. Anyway, once you've completed that go and get your two codes and redeem them on the website for the kalika case and the 30 day double barrel punisher. Uninstall Combat Arms: Zombies and re-install and complete another game and get more codes - repeat as many times as your heart desires! Profit$$ You can get unlimited codes this way and i'm currently downloading it for the 3rd time. Btw, each time you do it you are guaranteed 16,800 gp if you sell back the piece of crap double barrel and sometimes you get weapons to sell back from the kalika case for extra profit$$ Have fun!