Become mutual followers with 10 people in South Park

Use a toilet and achieve the highest mastery level

You defeated Princess Kenny and recovered the Stick of Truth.

You have collected half of the available costume sets.

You defeated 3 enemies in one battle while your buddy was knocked out.

You made friends with half of South Park.

You sold 300 junk items.

You've unlocked all of the upgrades for a New Kid ability.

You have joined the KKK.

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

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

Listen to the messages left on 5 different answering machines.