Boss fight
Every fair ends with a boss beaten through a mechanic on the board, with no health bar and no bullets.
Bosses never attack you directly and you never aim at them: each one changes WHERE you want to stand (marching guards, hidden hats, lit floor tiles, scrap bridges, clock hands, a grand remix). Fill its phases to win the show; the Audience is still your only life.
Late risers are off during the fight. Each boss has its own page with its mechanic and its helper moles.