Here is the full list of all 10 Swallow the Sea achievements.
Complete Swallow the Sea without taking damage.
100% Swallow the Sea
Complete Swallow the Sea in under 4 minutes.
Consume all Vobbles without dying.
Complete Swallow the Sea without dying.
Get kissed by the Orro.
Become an only child.
Consume the Orro.
Complete Swallow the Sea.
It happens to the best of us.