Choose a published goal
The Steam achievement page groups naturally into the tasks below. Depth and shell figures are achievement targets, not costs to unlock the next area.
| Task family | Publicly stated goal |
|---|---|
| Depth | Reach 100, 400, 700 and 1,000 metres |
| Shell milestones | Reach one million, one billion, one trillion and one quadrillion shells |
| Make a Friend! | Wave to another turtle on the island |
| Ultra Special Rainbow Jellyfish | Catch a rainbow jellyfish |
| Cleared Island | Complete all available achievements |
Keep the two undisclosed requirements separate
Built to Dive and Hammock Sleep appear in the public list with blank descriptions. Their titles alone do not supply the complete trigger. Check your achievement detail or an in-game hint before treating a guessed action as a guaranteed unlock.
Read patch changes by version
The announcement feed separates the 1.0.1 gameplay/interface hotfix from 1.0.2 localization. The dates below are the dates displayed in that feed; a patch note is not proof that a particular console build contains the same change.
| Version / displayed date | Relevant change |
|---|---|
| 1.0.1 / November 19, 2025 | Collectible requirement hover help; remappable Shellphone skill-tree shortcut; more mushrooms at 600 m; reduced-flashing option |
| 1.0.2 / June 20 | Italian localization |
Use the new tooltip help for material goals
If an upgrade needs a resource you are missing, inspect its hover details before choosing another dive. That is a concrete interface improvement recorded in 1.0.1; the note does not give an exact farming route or drop count.