Perform 30 Air Tricks in a row without touching the ground

Attempt and fail a trick before "landing" on the ground

Complete "Surface Tension"

Turn the sound down to 0 and music off in the options menu whilst in the library

Collect 500 ghost studs

Collect all of the Red Bricks

Defeat Ripper Roo.

Defeat Papu-Papu.

In a single level, spin an enemy into another enemy twice.

Spin away an Extra Life.

Perform all big LEGO figure transformations

Turn into Stan Hulk