The Achievement Store can be accessed by taking to Sigbert the Adventurer at Edgeville. He can be located just west from Edgeville bank.

Achievement Store

The interface that shows upon talking to Sigbert the Adventurer.

The items in this store can be purchased with achievement points which are obtained from completing Achievements. The bronze items with the gold trim are 13 points per item and the hell cat is 20 points.

Item Name Points required
Bronze platebody (g) 13
Bronze platelegs (g) 13
Bronze plateskirt (g) 13
Bronze kiteshield (g) 13
Hell cat 20

If you have purchased these items with your achievement points and you lose them, you can then rebuy the items with Coins.