Take an oath to The Three.

Take an oath to Devara's Light.

Complete the "Riot" mission.

Cook the hamster in Maniac Mansion (Don't try this at home, kids!)

Flush 50 objects through time

Play the whole game without skipping a cutscene

Reach yesterday without turning the stereo off

Get Fred to sign the contract

Hoagie uses battery with Chron-o-John instead of plug

Red makes a super battery with only a little help from Hoagie

Talk to Washington, Jefferson, or Hancock while they're outside

Vacuum up a hamster