You only get one star because this is tagged as an offline game, but you can't even start the missions or buy guns until you sit somewhere with internet long enough to download them. Then, any time a new sniper rifle is obtained, the next login removes it and all upgrades but keeps your mission progress, and the coins you spent are not refunded. After the third time I bought a tier 3 sniper rifle only to have it and all the effort into getting it be deleted irredeemably I had to delete this gam.