If more than one person completes The Minotaur Smasher task (I did two characters in a row, or maybe it's more),
"Minotaur Smasher reaches its full power and prepares to smash minotaurs!"
Minotaur Smasher comes alive and paths through the mino fort killing minos for about 6 minutes until it destabilizes and crumbles apart. Guess it's just for show?