A - Use Man-Bat or Black Canary to shatter the popcorn popper's glass window, then use heat vision to cook the gold kernels (free play)
B - Freeze the lobby's right waterfall, then climb up. Smash the balcony's fire extinguisher and build the bricks to form a zipline to the minikit (free play)
C - After beating Two-Face, use Robin's Acrobat Suit to flip along the poles to the right of the background stairs (story)