The return of Dungeon Fighter Online (OPEN BETA PT. I STARTS MARCH 24TH!).

I kind of want to try this game out again. I played a M Nen Master up until lvl 20 for some Nexon event that gave rewards to the other Nexon games if you played any. I feel like making a Monk, a M Striker, or a M Nen Master, but not sure which since I don't know much about this game.
Is there a "tank" class in this game? I might make that as a 2nd character if there is one.