WHAT IS APEX?
“Apex” is a new level of power for your characters, starting at level 65 with a questline to unlock potent new skills. These powered-up skills will help you conquer TERA’s most challenging content. Apex has a rigorous prerequisite: It requires an extremely high Item Level to unlock, let alone successfully complete.
The questline that starts you off was available for berserkers, brawlers, lancers, mystics, priests, slayers, and warriors in the Godsfall update. In the Dark Reaches update, the quest (and Apex) is available for archers, gunners, ninjas, reapers, sorcerers, and valkyries!