How friendly is the game on system requirements (i.e. supports current operating systems, no crazy hardware requirements, etc.)
Gameplay
How smooth is the gameplay? Are controls intuitive? Is the UI easy to understand? Is the game fun?
Sound
How is the game's soundtrack? Can you listen to ambient music/sounds for extended periods of time without excessive annoyance? Do effects complement and not dominate gameplay?
Graphics
How are the game's graphics? Does the game support higher or HD resolutions?
PvP
How is the game's PvP system? Is it balanced? Are there multiple PvP battle marchanics?
Features
How are the game's unique features? Are they compelling and useful? Are they truly unique and not just a rip of another game?
Community
Is the game's community active? Are they friendly and helpful? Is it easy to find parties and groups?
Market/Economy
Is the game's economy balanced? Are there intuitive systems for hawking your goods in-game? Are there fraud controls in place (whether in-game or the game's website)?
Fastest ticket support I've had in any game. Took them about 1h 30min to answer my ticket and resolve the problem... And it didn't involve Billing support and I've never spent cash with them. This shows they are unbiased with free and cash players.
I really like this game. The bullet hell MMO (as noted before) feels fresh and fun, and the 4 classes(and 3 sub-classes) provide pretty solid replayability. One thing I'm beginning to notice is that different bosses/parts of the game can vary greatly...
Really good! GMs not only listen...they respond and actually take care of issues. (very few issues actually!)
I honestly can't think of anything negative...seriously good publisher!