Set up for 360 controller in your game
you can. use joy2key.
errr no i think not.
gw2 is meant to be play with a keyboard and mouse.
use xpadder, it works perfect and can be used for every class, easy
This is a picture extracted from gw2.dat file. Game was constructed to be played on consoles and among other things, that`s why we have FoV problems on a PC, but during development it got stopped I guess.