Kothar went flying up, in actuality, the ship fell down around him, and in the narrow confines of the maintenance tunnel, he wasn't able to move his arm up above himself in time, and so running around as he was while looking up, Kothar was slammed face first into the ceiling of the tunnel.
The fall only lasted moments, and Kothar fell back to the floor of the tunnel, now on his hands and knees, tasting blood, Kothar removed his mask.
His nose was pouring with blood, since it had been smashed against the inside of his demon mask, although the interior was padded in case of any sort of blow, it wasn't intended to take on the full force of Kothar's body slamming against the top of a tunnel.
Lucio had intended the masks for the Nighthawks, and the nature of their work was mostly secretive silent assassinations and intelligence gathering, not full scale combat.
