1.Install Proprietary drivers for your graphics card
  NVIDIA Driver Version 310.14+
2.Install wine
Download wine source 
http://sourceforge.net/projects/wine/files/Source/ 
3.cd wine
  ./configure
4.Install GW2 or copy Gw2 director to linux
5.Create  Gw2.sh

#!/bin/bash
export WINEDEBUG=fixme-all
export LD_PRELOAD="libpthread.so.0 libGL.so.1"
export __GL_THREADED_OPTIMISATIONS=1
wine explorer /desktop=Gw2,1280x1024 Gw2.exe -dx9single