Knight Online is terrible, all you do is power-level. Honest.
Sure, there are quests to do, but they are nowhere near \"fun.\"
I uninstalled it within two days of downloading it in sheer disgust of how poor the gameplay is. Walk up to a enemy, click, sit back and watch it die.
Hell, you can even go up to the map bounds. and climb 80 degree NEAR VERTICAL slopes. As well, PvP - supposedly the games saving grace - comes in VERY late in the game. You have to ensure you have the absolute best armor and weapons otherwise the other team will kill you nearly instantly. Ugh.
Terrible...
[That said, it is free.
But then, i guess you get what you pay for. In this case, nothing.]