Pchooooooo! achievement in Outer Wilds

Outer Wilds on Steam

Outer Wilds: Archaeologist Edition

Endings - Official Outer Wilds Wiki

Outer Wilds Achievement Guide

Ian Jacobson's website has all the achievement art on it, including some unused ones, what do you think some of the cut achievements were? : r/ outerwilds

Outer Wilds Achievements @ Gamertag Nation

Outer Wilds: Echoes of the Eye DLC adds 14 secret achievements

Gone In 60 Seconds achievement in Outer Wilds

EOTE *minor* spoiler] Artstation has some images from concept art for the DLC. There are 14 achievements in-game, but 15 on the art-station. Any guesses as to what this achievement would've been

Outer Wilds for Xbox Series - DLC, Achievements, Trophies, Characters, Maps, Story