After beating both single-player modes (and 23/30 S-Ranks in custom battle mode), and a fair bit of grinding, I still only had 150k coins and 3 tanks when the best tank is 240k and there's still 32 others to buy. Given that, it would be unrealistic on a game without online for anyone to gain enough coins to unlock everything legitly. After getting the best tank, getting the last 7 S-ranks was a breeze. Originally I wanted to edit the coins and then buy the items, but I didn't figure out where the value is stored or in what format. But I did find where the unlocks are stored, so here's that instead. Instructions: Export savefile using JKSM or similar and copy to PC Open your savefile with a hex editor such as HxDen (for Windows) Go to the offset (CTRL+G on HxDen) and modify the following hex strings. Save. Copy back to 3DS and import with JKSM. Change each byte from 00 to 01 to unlock the corresponding item. Skins (34) 4C4E-4C70 Characters (13) 4C74-4C80 Tanks (36) 4C84-4CA7 Also the Totals coins earned (in Battle Record) are somewhere in 5124-512A.