!!! This achievement is UNOBTAINABLE at the moment. After completing all your battles, your achievement tracker will be stuck at 96%. The devs are working on a fix, although this may take a while.This achievement is now
OBTAINABLE.
UPDATE (February 26, 2018): Guild Wars is now one of three alternating events (Guild Wars, Raid Boss, Invasion). This makes this achievement only obtainable during one of the three week period.
(Your guild must be registered for Guild Wars for the particular week first!)
You will need to complete all your battles, that is
5 battles per day for six days, 30 battles in total.
Complete, not necessarily win.
Not sure what retreating does. (Can anyone verify?)
You can fight all the 30 battles on the last day if you want. If you wait until the last day, you will still have to fight all the guild wars, your score will not affect the past ones. You will still fight 5 battles for guild one, 5 battles for guild two etc.
The last day of the week's wars is
Sunday. Check out the Guild War tab to see when exactly the days reset.
(How do you register for Guild Wars? Only the guild leaders (top two ranks) can register. If you're not allowed to register, ask the guild master to do it or to promote you.
Where do you find the battles? In the Guild Tab select Guild Wars by pressing . In the Guild Wars section press three times to open the "Attack" tab. The five daily battles are here, participate simply by pressing .)