Level 30 Dark should be enough, even without Dark Magic yet. If you're still having trouble, wait until you can increase Spirit/Body/Water to the highest level you currently can (ie Expert/Master), to improve your buffs.Also, each weapon has a speed, which determines who goes next on the "action clock". For melee, even your Sorcerors are generally better off dual-wielding daggers rather than a staff - at least until you get a high-level Artifact staff. 2x attacks, and daggers are quick, which can help you slip that action clock in RT and get a few extra hits in
