Pet the dog.

Have an unreasonable number of windows open on your desktop.

Clear all levels on the Easy disk.

Clear all levels on the Medium disk.

Clear all levels on the Hard disk.

Clear all levels on the Extreme disk.

Catch a FEESH.

Clear one level on the Easy disk.

Clear one level on the Medium disk.

Clear one level on the Hard disk.

Clear one level on the Extreme disk.

Clear any level with the Full-Auto mod equipped.

Clear Shoujo on Extreme with the AutoMover mod equipped.

Clear any level with the Big Beats mod equipped.

Clear any level with the x1.15 mod equipped.

Change the color of your totem in the Settings menu.

Start a level while your truescore modifier is greater than 1.

Lose a life.

Clear a Boss fight while using its totem.

Answer all of B9's questions.

Complete one of the game's endings.

Complete the True Ending.