Yeah, the translation is pretty bad. But that doesn't really matter.
If you are talking about avatar customization, you get more faces, hair, etc. as you play the game.
There's an Arcade mode where it's you and up to 3 other friends vs. AI enemies. It's decently length and difficult too. But the PvP multiplayer is where it's at.
@Ryex: yeah, it's my kind of game, what can I say? We both still suck though, we're still in the level 1-9 league XD
EDIT: I just figured out the the starter weapons (the machine guns and the sword) do like half the damage of the actual weapons. Now I can deal damage so much faster XD