Impossible game, have to upgrade everything on every gun etc grip, magazine, barrel, scope,. Have to pay for not only first aid but health in between matches too. They pick what gun you must use in each level. Zombies run at you..2 hits you're dead. Replaying levels to get money is useless you'll get way less example $2,500 on completion of level then $350 on replay of level... Gold is useless. Get constant pop ups offering a deal on new gun for x amount of money funny thing is you never have eno