Core Keeper

1. 
   A Slimey EncounterSecret

   Steam withholds the description of a secret achievement.
   64%
2. 
   Bugging OutSecret

   Steam withholds the description of a secret achievement.
   53%
3. 
   Watch Your StepSecret

   Steam withholds the description of a secret achievement.
   44%
4. 
   From the Skies!Secret

   Steam withholds the description of a secret achievement.
   37%
5. 
   You're a WizardSecret

   Steam withholds the description of a secret achievement.
   44%
6. 
   Toxic PersonalitySecret

   Steam withholds the description of a secret achievement.
   29%
7. 
   From the Depths!Secret

   Steam withholds the description of a secret achievement.
   29%
8. 
   Slippery When WetSecret

   Steam withholds the description of a secret achievement.
   23%
9. 
   Just DesertsSecret

   Steam withholds the description of a secret achievement.
   25%
10. 
    Burning ThroughSecret

    Steam withholds the description of a secret achievement.
    18%
11. 
    Slippery ShinobiSecret

    Steam withholds the description of a secret achievement.
    35%
12. 
    Diggy Diggy Hole

    Gained 100 skill points in mining
    7.6%
13. 
    Cheese it!

    Gained 100 skill points in cooking
    8.4%
14. 
    Completely Hooked

    Gained 100 skill points in fishing
    9.3%
15. 
    Nature Nurturer

    Gained 100 skill points in gardening
    15%
16. 
    ...Sting like a bee

    Gained 100 skill points in melee
    8.5%
17. 
    Robin Hood

    Gained 100 skill points in range
    8.6%
18. 
    Health Conscious

    Gained 100 skill points in vitality
    8.1%
19. 
    Float like a butterfly...

    Gained 100 skill points in running
    9.1%
20. 
    Crafty Explorer

    Gained 100 skill points in crafting
    8.6%
21. 
    The Heart of the CardsSecret

    Steam withholds the description of a secret achievement.
    5.0%
22. 
    The Rune SongSecret

    Steam withholds the description of a secret achievement.
    15%
23. 
    The Phantom SparkSecret

    Steam withholds the description of a secret achievement.
    13%
24. 
    The Soul SeekerSecret

    Steam withholds the description of a secret achievement.
    9.4%
25. 
    Gossip Group

    Talked to a Big Larva
    3.4%
26. 
    Legendary FossilSecret

    Steam withholds the description of a secret achievement.
    10%
27. 
    In a RushSecret

    Steam withholds the description of a secret achievement.
    6.4%
28. 
    Certified Chef

    Discovered 100 recipes in the cook book
    6.7%
29. 
    Farmer Midas

    Harvested a golden plant
    26%
30. 
    A Throne Fit for a KingSecret

    Steam withholds the description of a secret achievement.
    4.7%
31. 
    Rock and Stone!

    Equipped the Ring of Rock and Ring of Stone
    39%
32. 
    Impersonator SyndromeSecret

    Steam withholds the description of a secret achievement.
    2.1%
33. 
    5 Centimeters Per Second

    Planted 10 Cherry Trees
    3.3%
34. 
    A Strange Song

    Play the Tune of Tempest
    4.1%
35. 
    Your Very First

    Hatched your first pet from an egg
    52%
36. 
    ThalassophobiaSecret

    Steam withholds the description of a secret achievement.
    14%
37. 
    I want ’em all!

    Stored all color variations of one pet type in a chest
    5.1%
38. 
    A Good Life

    Fed cattle
    30%
39. 
    Pet Prodigy

    Reached max level on a pet
    27%
40. 
    A Wizard Is Never Late

    Gained 100 skill points in magic
    3.6%
41. 
    Stay Away From The Summoner!

    Gained 100 skill points in summoning
    3.6%
42. 
    Song of the WoodsSecret

    Steam withholds the description of a secret achievement.
    18%
43. 
    Howl of the SeaSecret

    Steam withholds the description of a secret achievement.
    17%
44. 
    Roar of the FlamesSecret

    Steam withholds the description of a secret achievement.
    17%
45. 
    Visitor From A Dying WorldSecret

    Steam withholds the description of a secret achievement.
    15%
46. 
    Cambrian BehemothSecret

    Steam withholds the description of a secret achievement.
    10%
47. 
    Legion Commander

    Had 8 or more active minions
    4.5%
48. 
    Wielder of LegendsSecret

    Steam withholds the description of a secret achievement.
    9.7%
49. 
    Beam Me Up

    Used a waypoint
    36%
50. 
    Explosion Mastery

    Gained 100 skill points in explosions
    2.3%
51. 
    Silence the SymphonySecret

    Steam withholds the description of a secret achievement.
    8.3%
52. 
    Whisper of the VoidSecret

    Steam withholds the description of a secret achievement.
    3.2%
53. 
    Calculated ProphecySecret

    Steam withholds the description of a secret achievement.
    3.7%
54. 
    The Credence of RuinSecret

    Steam withholds the description of a secret achievement.
    1.7%
55. 
    The Titan BreathSecret

    Steam withholds the description of a secret achievement.
    2.8%

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 55 of them.