[Frankie]

rewarding currency for achievements is a bad idea to begin with. unless there are "repeat" achievements that you can do more than once to rack up coins, the whole currency is useless. if it's a system like xbox achievements where you earn an achievement once, then the amount of coins you can obtain is limited. after they are spent you'll never be able to get more.

achievements should just be a point number. it can be a good way to show who actually plays the game and who doesn't.