Sever Bull Crocker's head
When Bull Crocker is on his last bits of health, winning a Power Struggle will make you decapitate him. Damage Bull Crocker three to five times with chainsaw to speed up the process. Then, continue to win Power Struggles until you kill him. Cutting off Bull Crocker's head increases the score you normally are awarded. You can also use the head as a trash bin and smash it on an enemy's head.