Batman Sound test: Press Up/Right and press Start at the title screen. Hint: Batarangs: Always collect Batarangs. They kill enemies quickly from a safe distance. Hint: Hidden power-ups in level 4-2: Break the rocks to get power-ups such as the small hearts. Hint: Defeating Jack and the Joker: Hit Jack and the Joker with Batarangs. Throw the Batarangs so that they hit Jack or the Joker just as they slow down or stop moving.