Each achievement is connected to a single Behaviour set in the chosen Behavior Table & Module Package in GWADMIN.
Completing an achievement will grant the user a reward. The reward is based on variables set in the chosen Behavior Table & Module Package in GWADMIN.
When the achievement is completed, it cannot be completed again. HOWEVER, if the achievement is a tiered series of achievements, the next tier will show up when the previous one is completed.