Atomfall

1. 
   Back DoorSecret

   Steam withholds the description of a secret achievement.
   3.4%
2. 
   Emergency ExtractionSecret

   Steam withholds the description of a secret achievement.
   5.5%
3. 
   At One with the SoilSecret

   Steam withholds the description of a secret achievement.
   4.5%
4. 
   Operation AtomfallSecret

   Steam withholds the description of a secret achievement.
   4.9%
5. 
   OublietteSecret

   Steam withholds the description of a secret achievement.
   9.3%
6. 
   Do you require the Operator?Secret

   Steam withholds the description of a secret achievement.
   19%
7. 
   The InterchangeSecret

   Steam withholds the description of a secret achievement.
   64%
8. 
   AlphaSecret

   Steam withholds the description of a secret achievement.
   36%
9. 
   BravoSecret

   Steam withholds the description of a secret achievement.
   37%
10. 
    CharlieSecret

    Steam withholds the description of a secret achievement.
    45%
11. 
    DeltaSecret

    Steam withholds the description of a secret achievement.
    44%
12. 
    Reverse the PolaritySecret

    Steam withholds the description of a secret achievement.
    42%
13. 
    OberonSecret

    Steam withholds the description of a secret achievement.
    30%
14. 
    Detectorist

    Pick up the metal detector
    78%
15. 
    Where There's Muck There's Brass

    Find 10 metal detector caches
    44%
16. 
    Packed Lunch

    Find 5 buried lunchboxes
    39%
17. 
    Avid Collector

    Find 10 comics
    3.9%
18. 
    Radiophonic

    Find 5 audio logs
    32%
19. 
    Mate's Rates

    Find 5 traders in the Quarantine Zone
    49%
20. 
    We Want Information

    Read 50 notes in the Quarantine Zone
    43%
21. 
    Refer to Manual

    Learn 12 skills
    34%
22. 
    Quick ExitSecret

    Steam withholds the description of a secret achievement.
    1.4%
23. 
    Not Expecting a CallSecret

    Steam withholds the description of a secret achievement.
    1.5%
24. 
    Orna mental

    Find and destroy 10 Garden Gnomes
    4.5%
25. 
    Homemade

    Find and learn 10 recipes
    35%
26. 
    Make Do and Mend

    Upgrade a firearm to pristine condition
    30%
27. 
    UnpluggedSecret

    Steam withholds the description of a secret achievement.
    44%
28. 
    Any Old IronSecret

    Steam withholds the description of a secret achievement.
    17%
29. 
    Fast Bowl

    Kill 10 enemies with a thrown weapon
    3.8%
30. 
    Hit for Six

    Redirect a thrown grenade with the cricket bat
    1.5%
31. 
    Burglar

    Use the Signal Redirector to unlock 5 doors
    34%
32. 
    Batteries Not Included

    Power up a deactivated robot
    4.1%
33. 
    Caught Red-handed

    Cause an enemy to drop their Molotov cocktail
    34%
34. 
    Target Practice

    Get 6 kills with the MK.VI Revolver without reloading
    7.2%
35. 
    Grand Slam

    Take out at least 5 enemies in one explosion
    14%
36. 
    High Tea

    Consume a Cornish pasty, English tea, and a slice of cake in 30s
    8.6%
37. 
    Mind Over MatterSecret

    Steam withholds the description of a secret achievement.
    1.3%
38. 
    A Throne Fit For All ThingsSecret

    Steam withholds the description of a secret achievement.
    1.2%
39. 
    SeaworthySecret

    Steam withholds the description of a secret achievement.
    1.1%
40. 
    ExhumationSecret

    Steam withholds the description of a secret achievement.
    5.4%
41. 
    Our Island Gnome

    Find and destroy 15 Garden Gnomes on Midsummer Isle
    0.7%
42. 
    Recalling Our PastSecret

    Steam withholds the description of a secret achievement.
    4.1%
43. 
    Fish Fingers

    Kill an Aquatic Feral in a fist fight
    1.6%
44. 
    Midsummer Picnic

    Consume an Infection Sample, Infected Honeycomb, and Druids' Tonic within 10 seconds
    1.2%
45. 
    Buzzkill

    Use an Explosive Lure on the Beekeeper’s Swarm
    1.5%
46. 
    Collapsing the HeavensSecret

    Steam withholds the description of a secret achievement.
    1.4%
47. 
    Creature of ThoughtSecret

    Steam withholds the description of a secret achievement.
    1.6%
48. 
    Permission GrantedSecret

    Steam withholds the description of a secret achievement.
    4.8%
49. 
    New Directive

    Have a reprogrammed robot ally destroy 5 enemies.
    1.5%
50. 
    See How You Like It

    Destroy 3 robots using a salvaged robot weapon.
    1.4%
51. 
    Gnome on the Range

    Find and destroy 10 garden gnomes in Stafell Crag.
    0.6%
52. 
    Fight Amongst Yourselves

    Affect 6 enemies with Red Mist Bombs in a short space of time.
    0.7%
53. 
    Must… Kill…

    Kill 3 enemies with your fists while the Red Strain Adaptation skill is active.
    0.6%
54. 
    Red Handed

    Kill a Contaminated human in a fist fight.
    1.2%

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 54 of them.