Dead city cheat android

if you are playing the came dead city on the android which is from com2us premium games the only thing to get ahead of this game by upgrading the weapons to the max. rememnber to upgrade until next upgrade is available for example m45 have 400 hit point where as when you upgrade your submachine gun you wont even get near it so you have to think twice weather you want to upgrade or move to next level.
2nd problem is hanging of system if on galaxy y handset., particularly in the later stage of the game and again I want to say to backup your data externally and on the game server of com2us.
In short play lots of replay and upgrade your guns and armour to max