Hi, a short tour of the Sea Of Solitude achievements:
Spoiler1) Uncorked
Collected your first Message in a bottle
2) Bottled
Collected all bottles
3) Shoo!
Shooed your first Seagull
4) Flock of Seagulls
Shooed all Seagulls
5) Fire!
Fired the first flare
6) Connected
Connect with mirror Kay for the first time
7) School‘s out
Made it through school
8) Sunny
Finished Level 1
9) Lonely at the top
Reached top of the Skyscraper
10) Mama and Papa
Finished Level 2
11) Breakdown
Finished Level 3
12) Resolve
Finished the game
Secret Achievement:
1) Comfy
Respawned on couch in Skyscraper
2) Raver
Got grabbed by waterhands 10 times
3) Deep dive
Jumped headfirst into the water from a high point
4) Seeker
Fired 30 flares
5) Human Bait
Eaten by Whale 20 times
6) Mermaid
Swam a very long distance
7) Runaway
Travelled very far by foot
8) Sailor
Travelled a long distance by boat
9) Danger swimmer
Swam long distance while whale was around