Bring an artifact back to the museum.

Destroy the Model Rocket by flying into the sun or Hollow's Lantern.

Enter Giant's Deep ocean fast enough to break through the current.

Die within 60 seconds of waking up.

Make a choice that will define the future.

Defy death.

Solve all puzzles and monuments.

Help Byron get elected mayor.

Explore all of the lost labs.

Activate the tower in the Anthropic Hills.

Build a seamoth

Activate the tower in the Western Delta.

Activate the tower at the Circular Oasis.