Mothership Down

1. 
   Going Deeper

   Unlock region 2
   59%
2. 
   Flying with Friends

   Unlock region 3
   32%
3. 
   Get Ready for Fireworks

   Unlock region 4
   21%
4. 
   Last but not Least

   Unlock region 5
   15%
5. 
   Going Home

   Finish Mothership Down, and escape the moon.
   6.8%
6. 
   Master of Movement

   Beat every star in region 1.
   21%
7. 
   Master of Logic

   Beat every star in region 2.
   9.5%
8. 
   Master of Multiples

   Beat every star in region 3.
   8.2%
9. 
   Master of Firepower

   Beat every star in region 4.
   8.2%
10. 
    Master of Machines

    Beat every star in region 5.
    5.4%
11. 
    Master of the Moon

    Beat every star in the game.
    5.4%
12. 
    Fighting Gravity and Winning

    Beat every star on the level "Ground Up"
    40%
13. 
    Undigested

    Beat every star on the level "The Bowels"
    30%
14. 
    Ding Dong

    Beat every star on the level "Doorbell"
    12%
15. 
    Ships in Bloom

    Beat every star on the level "Like Flowers"
    9.5%
16. 
    Key Takeaways

    Beat every star on the level "One for All"
    14%
17. 
    In Perfect Harmony

    Beat every star on the level "Shuffle the Deck"
    15%
18. 
    Flights in Tight Spaces

    Beat every star on the level "Dead Drop"
    6.8%
19. 
    No Borders

    Beat every star on the level "Through the Breach"
    5.4%
20. 
    No Sound Barrier in SpaceSecret

    Steam withholds the description of a secret achievement.
    52%
21. 
    Teachable MomentSecret

    Steam withholds the description of a secret achievement.
    78%
22. 
    Crush DepthSecret

    Steam withholds the description of a secret achievement.
    6.8%
23. 
    Two Birds, One StoneSecret

    Steam withholds the description of a secret achievement.
    27%
24. 
    Under the WireSecret

    Steam withholds the description of a secret achievement.
    0.0%
25. 
    110% EfficiencySecret

    Steam withholds the description of a secret achievement.
    34%
26. 
    The Pipeworks Cave DisasterSecret

    Steam withholds the description of a secret achievement.
    1.3%
27. 
    Going Up?

    Beat every star on the level "Smooth Elevator"
    8.2%
28. 
    The Solution

    Beat every star on the level "The Problem"
    5.4%
29. 
    Taking a ShortcutSecret

    Steam withholds the description of a secret achievement.
    8.2%
30. 
    MismatchSecret

    Steam withholds the description of a secret achievement.
    25%

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 30 of them.