Get all other trophies in the game

Play the whole game without skipping a cutscene

Reach yesterday without turning the stereo off

Flush 50 objects through time

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

Make it rain

Vacuum up a hamster

Make a skunk

Make vinegar

Wake up Dr. Fred

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

Disqualify Harold

Try to microwave the hamster again after he's thawed out