Flotsam

1. 
   The Questionable Fishionary

   Rescue the Aquaculturist.
   15%
2. 
   The Inspection Connection

   Rescue the Architect.
   16%
3. 
   Gull-Fu Sensei

   Rescue the Birdkeeper.
   14%
4. 
   Photosympathist

   Rescue the Botanist.
   17%
5. 
   Five-Starfish Chef

   Rescue the Chef.
   11%
6. 
   Ill Dottore

   Rescue the Doctor.
   22%
7. 
   Power Tripping

   Rescue the Electrician.
   22%
8. 
   Goop Scoop

   Rescue the Chemist.
   16%
9. 
   A Know-It-All Fix-It-All

   Rescue the Engineer.
   21%
10. 
    The Soil Survivor

    Rescue the Farmer.
    23%
11. 
    Trash Talker

    Rescue the Radio Technician.
    36%
12. 
    Wet Feet on the GroundSecret

    Steam withholds the description of a secret achievement.
    8.8%
13. 
    End of the LineSecret

    Steam withholds the description of a secret achievement.
    7.8%
14. 
    On Air and WaterSecret

    Steam withholds the description of a secret achievement.
    29%
15. 
    A Space-Ship!Secret

    Steam withholds the description of a secret achievement.
    8.8%
16. 
    A Sign of Life

    Rescue a drifter.
    47%
17. 
    Trashcended

    Research all technologies.
    7.4%
18. 
    Whatever Floats Your Boat

    Build a Salvaging Boat.
    34%
19. 
    A Floating Town

    Have a town with 10 drifters.
    25%
20. 
    A Floating City

    Have a town with 25 drifters.
    6.6%
21. 
    Seasoned

    Reach day 100.
    18%
22. 
    Boatie

    Travel 50.000 units with the town.
    14%
23. 
    Captain

    Travel 200.000 units with the town.
    0.8%
24. 
    Gull-friend

    Rescue 10 seagulls.
    3.1%
25. 
    Around the World in 80 days

    Travel 42.000 units within 80 days.
    2.8%
26. 
    Gull-Bossing It

    Have more seagulls than drifters in your town.
    0.8%
27. 
    No Drifter Left Behind

    Complete the game without having a drifter die.
    6.5%
28. 
    Accidentally Vegan

    Survive 20 days with all drifters eating only Seaweed Salads.
    2.4%
29. 
    Happy Go-Lucky

    Have 10 or more ecstatic drifters at the same time.
    21%
30. 
    Lone Wolf

    Survive 20 days with a single drifter.
    0.5%
31. 
    All Gas No Brakes

    Have 50 or more buildings upgraded with Gas Bags.
    11%
32. 
    The Floating Restaurant

    Cook 50 'Yummy' or higher quality food in a single day.
    0.6%
33. 
    The Final Chowdown

    Craft 100 'Animal Chow' in a single day.
    1.4%
34. 
    Tour de Mer

    Generate over 150 Eels/s by only using Manual-Powered Generators.
    0.7%
35. 
    I Love My Job

    Have 15 or more drifters doing their favorite task at the same time.
    0.8%
36. 
    THE Jack of All Trades

    Have a drifter with maximum expertise in all attributes.
    0.3%
37. 
    A Year!

    Reach day 365.
    1.9%
38. 
    Canned Foodie

    Survive 30 consecutive days without cooking food.
    0.8%
39. 
    Hydro Homies

    Use a total of 100 Fresh Water in a single day.
    21%
40. 
    Bigger is Better

    Exceed 15.000 total weight of the town.
    2.8%
41. 
    Land Hopper

    Fully salvage 15 different landmarks in one day.
    0.4%
42. 
    Shell-tered

    House all drifters.
    53%

Names, descriptions and icons are the game’s own, as Steam publishes them; the share is how many owners have unlocked each, from Steam's global figures for 42 of them.