The perfect game, but you can do a "shop" what you press a button (I don't know what you can do) and you have a shop with the guns and armor.
And ranks! The ranks are very important because each rank you earn, you have a prize: a weapon or armor and get money.
For example, the first rank have the knife, gun and sniper.
When you have two bids to rank the shotgun and $ 100 more. And when you have a weapon unlocked (eg when you buy grenades) you get such in a map.
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