While it's a fairly thick wall, and reinforced with metal, his rock to mud effect is enough to weaken it to the point the blasting charge can punch through.<br/><br/>Beyond the vault door, he enters into a mid-sized room, lined with secure containers. At the back, seven doors stand, each leading to a different set of stairs, descending into the ground. They are only labeled 1-7, without any indication of what they hide.