While breaching the water from dive mode, pass over land before entering the water once more.
Collect your first relic.
Unlock your first airframe.
Encounter the Sunfish.
Encounter the Flock.
Encounter the Leviathan.
Encounter the Warden.
Encounter the Serpent.
Visit your companions.
Collect 27 relics throughout the Inverse.
Unlock each world's signature airframe.
Fly into a world's sun.
Pollinate the Accordion Blooms in the Sunchamber.
Cut down a hanging garden or Windcatcher.