Tie him to a post - and let the guy he beat up take a sledge hammer to him ... Or better still, strip him butt naked, tie him to a concrete pillar, and hand the other guy a bull whip fitted with pieces of bone and steel hooks. Skin the bastard alive.
I like it!
While you are at it sue the school for maintaining an attractive nuisance.
The college and its administrative policies encourage such attacks. Until the attacks cease the college should have to pay the victims of such attacks. If the college insists on maintaining an open campus then they are responsible for the behavior of everyone on campus. The response ‘They aren’t a student” is bunch of B.S.