Charlie stood unwaveringly as the brute charged him. As the rather larger man grew closer and closer Charlie tensed up and then swiftly stepped to the side at the last minute pushing on the man's back hopefully using his own momentum to send him into the battlements. Charlie then quickly made a dash for his quarterstaff still leaning against the crenulation. 

If he could get it in time he could perhaps target the attacker's knees, or if the crash took care of him he could disarm the wild swordsman moving for his downed companion. Either way leaving his staff free for the taking was not the best course of action in this fair of a fight.