How to install Wakfu step by step for Linux Ubuntu 12.04
open firefox and a terminal, you will need it. Beware,
commands are case sensitives and some lines have a mix
of lower case and upper case letters.

0. give yourself super-powers :D
$ sudo su

1. update repositories listing :
# apt-get update ;

2. install the fonts:
# apt-get install ttf-mscorefonts-installer libtxc-dxtn-s2tco

3. download file Wakfu_unix.sh from homepage http://www.wakfu.com
and place it in your home directory, something like /home/user1
if your account is called user1

4. and make it executable by typing in a terminal :
# cd /home/user1
# chmod +x Wakfu_unix.sh

5. then run it and accept default directories:
# ./Wakfu_unix.sh

6. after install run Wakfu once to get updates:
# /usr/local/ankama/Wakfu/UpLauncher

note, from there you can run it manually from a terminal by
typing the following line :
$ gksudo /usr/local/ankama/Wakfu/UpLauncher &

7. get the launcher right:
# cp /home/user/.local/share/applications/ankama-wakfu.desktop /usr/share/applications

8. edit the launcher, you need root access to run Wakfu.
use your favorite editor, mine is leafpad and replace the line
beginning with exec= by the following line:
exec=gksudo /usr/local/ankama/Wakfu/UpLauncher

9. now Wakfu appears in your start menu and should run fine :-)