Boro asked me to write my review on this.
Downloaded it last night and have only played it for the first 12 levels or so, this is my take.
At the moment, it is a generic F2P mmo. There is a cash shop, but it's all aesthetic for right now, so it doesn't seem to be a "Pay to Win" mmo. The gameplay is similar to Nexus's Vindictus with an anime art style. 4 Characters, your sword guy, a fighting guy, a mage girl and a gun girl. At the moment the gun person is unavailable and I've only been playing with the Mage.
Gameplay itself is just dungeons where the fighting is a 3D side scroller where you must beat an area before advancing to the next with a boss at the end, similar to Guilty Gear. The dungeons themselves aren't randomly generated and are the same each time. Not a very wide selection of skills, at least at my level but the dungeons are honestly easy enough that you won't really need it. I haven't died once and can solo Very Hard dungeons with a recommended 4 people and still get a SSS rank. In my opinion the fighting is a little too easy.
The storyline and dialogue are trying to be humorous. Example being your character questioning why they have to walk across the street to talk to somebody for a quest. There is voice acting, but it's generally off synch or too low to hear with no option to turn it up, but again, it is in beta.
There is supposedly PVP, but I haven't found out where to do that, or if it's implemented yet.
tl;dr - Generic F2P mmo with potential, but it's still in beta. Maybe worth a play while watching it for improvement. 5/10