Steparu’s still playing through Bless‘ final Korean beta test. He outlines the game’s playable classes or jobs (Guardian, Berserker, Paladin, Ranger, Assassin, and Mage, with Warlock and Mystic slated for later). He also notes that some jobs are restricted based on your faction choice.
The skill system “isn’t overly complicated,” Steparu writes, noting that it’s pretty hard to mess up a build. You can also change your skill loadout, even inside of dungeon instances. As per usual he includes a few gameplay videos, so click past the cut if you’d like to see how Bless is shaping up in Korea at the moment.