With the guardian slain, the rest of the possessed animals were easier to deal with. Adrian left the small fry to the others.
To conquer the Mad Horde, one usually needed to kill all the surrounding animals and monsters before challenging the Guardian. But if you were strong enough, killing the guardian first weakened the rabble significantly.
Though, something like this was only possible because this was only the first floor of the Trial and because the guardian happened to be a high-ogre, something that specialized in strength and regeneration.
It was a monster that was utterly countered by Adrian, who specialized in hitting big but slow opponents with all his strength.
