Each meister are on there own level of the following:
level one meister: rookie or freshmen
level two meister: Gets some privileges, and is fairly strong
level three meister: Gains more privileges than level two, is highly strong
level four meister: Gains all access to places and weapon became a death scythe
You may only take missions that are below or on your level. Also when you are on a mission, you must take someone with you. It's alot safer that way and fun. You may be whatever level you want as long as you go with someone else on a mission
