Hello guys, I might have an "easy" solution for you to beat the clan quest.
Or at least this is how I did it.
What unit do you need ? As much as maxed shield soldiers you can have. Empire ones are enought.
You need a ranged weapon to pull ennemies.
The basic strategy is to form shield walls with your units while you stand aside and attack from behind.
Step 1 : clear the outside camp.
those bandits ain't that good, so you can just charge them.
Step 2 : pull the units guarding the entrance.
with a bow, attack the guards
wait them with your shield wall. Some archer will come as well. Or you charge them, or you wait they empty their arrows on your shields.
Step 3 : clear the first court.
THE ONLY DIFFICULT PART IS TO CLEAR THE FIRST COURT.
Best is to pull them on the bridge. Taking the fight under the gate is good too, but you need to charge after killing warriors to get rid of the archers posted in the court.
MAKE SURE YOU DON'T GO IN THE SECOND COURT.
If you empty the first court, you basically won.
Step 4 : hide on top on tower 1.
In the left corner of the first court, there are stairs. Go there and climb the tower. Post your units just at the edge of the top of the stairs, shields up. Try to let just enought space for your opponent to go throught 1 by 1.
With an arrow, pull anyone in the second court.
There you go, you can easily kill them when they try to reach you up there, stuck in the stairs. You gotta stay on the last floor of the tower until there are no more ennemies coming.
Step 5 : repeat on tower 2.
Once you defeated all ennemies in the second court, go in the second tower, and repeat.
There might be 1 or 2 archers that will be able to shoot you from afar, your job is to kill them.
CONGRATULATIONS !
I hope I was able to help you my fellow lords and knights.