Entropy : Zero 2

1. 
   Radio Recon

   Find the 19 audio recordings at Arbeit 1.
   6.6%
2. 
   Beat Cop

   Complete the game on Normal difficulty or higher.
   39%
3. 
   Bad Cop

   Complete the game on Hard difficulty.
   14%
4. 
   Never had it anyway.Secret

   Steam withholds the description of a secret achievement.
   90%
5. 
   New body. New Boots.Secret

   Steam withholds the description of a secret achievement.
   78%
6. 
   Then came the CombineSecret

   Steam withholds the description of a secret achievement.
   69%
7. 
   DetourSecret

   Steam withholds the description of a secret achievement.
   56%
8. 
   On a RoadSecret

   Steam withholds the description of a secret achievement.
   49%
9. 
   Custody AssistantSecret

   Steam withholds the description of a secret achievement.
   47%
10. 
    Problem SoulSecret

    Steam withholds the description of a secret achievement.
    29%
11. 
    Deliverance

    Bring Wilson to the upload station at the end of the game.
    38%
12. 
    Still AliveSecret

    Steam withholds the description of a secret achievement.
    29%
13. 
    There will be painSecret

    Steam withholds the description of a secret achievement.
    29%
14. 
    There will be darknessSecret

    Steam withholds the description of a secret achievement.
    21%
15. 
    Friends in low places

    Meet Wilson.
    67%
16. 
    Supposed BrothersSecret

    Steam withholds the description of a secret achievement.
    36%
17. 
    Now there are two of them!

    Kill both of the gonomes in the Xentarium.
    14%
18. 
    Rebar Huntsman

    Kill 25 alien creatures with the crossbow.
    8.2%
19. 
    Kill it with a GUNSecret

    Steam withholds the description of a secret achievement.
    57%
20. 
    Drift KingSecret

    Steam withholds the description of a secret achievement.
    29%
21. 
    Worth the Weight

    Consume 10,000 kg with Xen grenades.
    45%
22. 
    Far Distant Eyes

    Witness the secret temporal overlay in the monitoring station.
    7.7%
23. 
    No Chance of Escape

    Neutralize Dr. Mossman's helicopter on the Arbeit 3 helipad.
    10%
24. 
    Temporal Troubles

    Find and kill all 4 instances of the Temporal Crab.
    5.9%
25. 
    Cell Division

    Reach the extraction point with four soldiers.
    26%
26. 
    Science Team

    Reach the secret lab within Arbeit 1 with five soldiers.
    8.8%
27. 
    Ghost HuntSecret

    Steam withholds the description of a secret achievement.
    53%
28. 
    My Evil TwinSecret

    Steam withholds the description of a secret achievement.
    67%
29. 
    Dirty Harry

    Kill 18 rebels using the 357.
    34%
30. 
    Please Knock

    Kick open 60 doors.
    13%
31. 
    Overwatch says "Stop kicking it"Secret

    Steam withholds the description of a secret achievement.
    11%
32. 
    Party Trick

    Kill a long-jump rebel whilst they are in mid-air.
    44%
33. 
    The ProjectSecret

    Steam withholds the description of a secret achievement.
    46%
34. 
    Scar Zero

    Reunite with Scar Zero at Entropic Control.
    23%
35. 
    Closet Clearer

    Find and open all of the Wilson closets.
    9.6%
36. 
    Interdependency

    Get health from a surrendered medic.
    10%
37. 
    Visitor Pass

    Earn bronze medals on all challenge maps.
    3.4%
38. 
    Bootstrap Program

    Earn silver medals on all challenge maps.
    3.4%
39. 
    Mirage Clearance

    Earn gold medals on all challenge maps.
    3.4%

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 39 of them.