The mages in the fortress were surprised with the attack. Never were they expecting someone to attack them from inside!
At first, they firmly believed that William was just trying to lure them out of the fortress. But the surprise attack? They never saw it coming.
William had to move. He could see the sparks of the spells that were being thrown inside the fortress.
"Retaliate!" one of the mages said. "Attack them with everything we have!"
The fight really broke out. William placed the explosive sack to the side and moved at a rapid pace toward the fortress.
It was the perfect timing because they were all concerned with the soldiers who came through the sewers. Only a few mages were watching the front gate, afraid that more soldiers would come from there, but when they saw there was no one, they relaxed.
