Well, to level up you do the Nano quests. First you should collect some fusion points to activate the Nano quest, then go do it. After you finish one quest, you should level up. I don't think there's any experience points in Fusionfall.
I've seen the commercials for it on TV, and I lol'ed.
It looks, interesting but the characters look weird, I thought Dexter was a girl at first =P Is it any good I mean it sounds like any old MMORPG to me.
It is extremely hard to level up .Good game,but it has to be a downloadable game.It is good to see the CN characters in a game.The game gets boring though.