There is file called "tower_fortress_release_nitrome_015_gold_176.ini" that holds the game data.

In Mac: Search directly the file name In PC: Write %appdata% to file explorer and then search it. In Android: if you are rooted you can find the file with search. In iOS: IDK :D

bikeunlockedstring is handling the suits but do not touch it. It causes crashes some times when it is not handled properly. total_coin holds your coins.Put a finger on 9 button for while. Save and exit.

Go in to the game and buy everything.