Enhancement is the process of improving a weapon or armor equipment by adding (+) bonus. Equipment items can be enhanced up to (+20).
An enhancement that fails at +5 or below has a chance to downgrade the item enhance level by 1 level. A failure at +7 or below has a chance to downgrade the item enhance level to zero. An enhancement that fails at +8 or above has a chance to destroy the item. A failed enhancement, that has used an Enhancement Rune, will not destroy the item.
+12 weapon enhancement and +13, +14, +15 enhancement cannot be protected and solely rely on chance. (There is a rare exception for +13, however, it renders the weapon as "restored" and will need to be reforged before you can enhance it further).
If an item has been destroyed through enhancement, it can be purchased back with AP.
To purchase back the item, players will need to speak to the Strange Traveler, who is located in the Colhen Inn. To access the Strange Traveler, players will need to complete the battle quest "Fomorian Emblem".
After you purchase the weapon back from the Strange Traveler, you will need to Reforge the item before you can enhance it again.