Use a toilet and achieve the highest mastery level

You made friends with half of South Park.

You defeated Princess Kenny and recovered the Stick of Truth.

You defeated Princess Kenny in your girl makeover disguise.

While inside Mr. Slave, you summoned Mr. Slave.

You successfully blocked every enemy attack in a single (non-tutorial) battle.

You interrupted 5 channel attacks by using a fart.

You defeated the Grand Wizard Cartman in battle.

You collected 15 Chinpokomon.

You befriended the Goths, like everyone else playing this game.

You opened all of the garages in South Park.

You have joined the KKK.

Over the course of the game, you've blocked 100 attacks.