Ill tell u how I did it, send some archers to the farrest side of the wall not on the left!! take your laddermen to go on to that wall. and send on that wall your spearmen, when they will be fighting ,send your archers to the closest tower. then go down onto the ground ,stay away from the walls inside the castle! go just by the rocks with like 5-7 archers, but keep them away from walls and enemys spearmen and pikemens because archers can kill them for long distance once u hit them with your archers arrows, they will try to get your archers ,if they are to close, enemys, send your archers away from them, so they can shoot them again. do it to the point u can get to the edwin.

thank you very much whoever you are

How do you beat Level 4. To save the monks, destroy the outlaw camp, and save Sir Grey.