Full list of all 22 Sea of Solitude achievements worth 1,000 gamerscore. It takes around 5-6 hours to unlock all of the achievements on Xbox One.
Shooed all Seagulls
Finished the game
Finished Level 3
Finished Level 2
Collected all bottles
Reached top of the Skyscraper
Respawned on couch in Skyscraper
Finished Level 1
Made it through school
Got grabbed by waterhands 10 times
Travelled very far by foot
Opened a path through water
Travelled a long distance by boat
Swam a very long distance
Swam long distance while whale was around
Jumped headfirst into the water from a high point
Shooed your first Seagull
Eaten by Whale 20 times
Collected your first Message in a bottle
Connect with mirror Kay for the first time
Fired 30 flares
Fired the first flare