Grognak took a brunt of the blast but nothing specifically was hurt on him. The Super Mutant enjoyed glorious fights but that being said he knew when to swallow his pride and leg it. "Grognak go into tunnel!" Grognak exclaimed to his comrades as he nearly tripped over the person hiding behind him. He took off after Stark into the small door and hid along with the human in the hopes of not being found. He holstered his axe and pulled out his gun, aiming it at the door incase anything tried to follow them.