Horripilant

1. 
   Twig Collector

   Collect wood for the first time.
   99%
2. 
   Rock and Stone

   Collect rock for the first time.
   87%
3. 
   Fancy Metal

   Collect iron for the first time.
   72%
4. 
   Greater Capacity

   Upgrade your storage for the first time.
   97%
5. 
   Power in Numbers

   Level up an upgrade for the first time.
   96%
6. 
   Production I

   Get a material's production up to 10/s.
   96%
7. 
   Production II

   Get a material's production up to 1 000/s.
   87%
8. 
   Production III

   Get a material's production up to 100 000/s.
   58%
9. 
   Click I

   Get a material's click up to 10 per click.
   91%
10. 
    Click II

    Get a material's click up to 250 per click.
    68%
11. 
    Click III

    Get a material's click up to 2 500 per click.
    56%
12. 
    It's dark in here...

    Turn off the campfire for the first time.
    95%
13. 
    Meet god.

    Meet god for the first time.
    97%
14. 
    Nice try.

    God won't be defeated this easily.
    28%
15. 
    Self Defense

    Kill an enemy for the first time.
    98%
16. 
    Blood Lust I

    Kill 100 enemies.
    95%
17. 
    Blood Lust II

    Kill 1 000 enemies.
    81%
18. 
    Blood Lust III

    Kill 25 000 enemies.
    59%
19. 
    Blood Lust IV

    Kill 50 000 enemies.
    54%
20. 
    Blood Lust V

    Kill 75 000 enemies.
    47%
21. 
    Blood Lust VI

    Kill 100 000 enemies.
    39%
22. 
    Full Bestiary

    Kill every enemy at least once.
    51%
23. 
    Naturally Skilled

    Reach floor 10 without dying, giving up & without rebirth.
    18%
24. 
    Become Anew

    Rebirth for the first time.
    90%
25. 
    Bloody Power I

    Gain a total of 10 Hemalith.
    84%
26. 
    Bloody Power II

    Gain a total of 100 Hemalith.
    74%
27. 
    Bloody Power III

    Gain a total of 1 000 Hemalith.
    64%
28. 
    Bloody Power IV

    Gain a total of 5 000 Hemalith.
    58%
29. 
    Bloody Power V

    Gain a total of 10 000 Hemalith.
    55%
30. 
    Skill Expertise

    Max out a skill (that's not an unlockable).
    62%
31. 
    Jack of All Trades

    Have at least one level of every skill.
    32%
32. 
    Oh, a friend!

    Get your first familiar.
    90%
33. 
    Oh... oh no...

    You did that by mistake, didn't you?
    83%
34. 
    Caretaker

    Nurse a familiar back to full health.
    34%
35. 
    Pet Sitter

    Get every familiar at least once.
    36%
36. 
    K.I.A

    Lose a familiar in battle.
    83%
37. 
    Dropped Meat

    Crawl out of battle and lose meat for the first time.
    98%
38. 
    I hear crumbling...Secret

    Steam withholds the description of a secret achievement.
    67%
39. 
    A gate opens...Secret

    Steam withholds the description of a secret achievement.
    63%
40. 
    Another gate..Secret

    Steam withholds the description of a secret achievement.
    58%
41. 
    Yet another gate...Secret

    Steam withholds the description of a secret achievement.
    53%
42. 
    A door opens.Secret

    Steam withholds the description of a secret achievement.
    51%
43. 
    Another opening...Secret

    Steam withholds the description of a secret achievement.
    49%
44. 
    The Final GateSecret

    Steam withholds the description of a secret achievement.
    45%
45. 
    A set of doors.Secret

    Steam withholds the description of a secret achievement.
    66%
46. 
    Rusted PipesSecret

    Steam withholds the description of a secret achievement.
    55%
47. 
    Cold-bloodedSecret

    Steam withholds the description of a secret achievement.
    52%
48. 
    Slotted InSecret

    Steam withholds the description of a secret achievement.
    52%
49. 
    No longer blind.Secret

    Steam withholds the description of a secret achievement.
    51%
50. 
    Another PlaneSecret

    Steam withholds the description of a secret achievement.
    51%
51. 
    The Angels Sing AgainSecret

    Steam withholds the description of a secret achievement.
    46%
52. 
    No Longer in LimboSecret

    Steam withholds the description of a secret achievement.
    53%
53. 
    Now what?

    Reach the 1000th floor.
    50%
54. 
    The Final PassageSecret

    Steam withholds the description of a secret achievement.
    44%
55. 
    Made your choice.Secret

    Steam withholds the description of a secret achievement.
    44%
56. 
    Blood Thirsty

    Exchange materials for a Hemalith boost.
    55%
57. 
    Temporary Boost

    Exchange Hemalith for temporary strength.
    31%

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 57 of them.