With the gates ripped open, Euron's men flooded the Blackstone Fortress like a raging river. After the deadly encounter with the twisted horror, the defenders were too weary and disorganised to hold the entrance chamber and were easily overwhelmed. Garth Greysteel retreated into one of the hallways with some of his men. Soon fighting spread all throughout the foundation of the Hightower and many groups of reavers headed up towards the top.