I played the closed beta of this a bit... it could eventually be an awesome game. Right now, or at least last time I logged in, a few weeks, ago, very little was actually implemented, only 2 classes, and though it may mean nothing to most people, you couldn't even jump.
However the combat is hilarious!
I may check back on this game once it's fully up to speed with the live Korean version, but that looks like it'll take a year or two.