Lost in Play

1. 
   Dreamer

   But you're not the only one
   94%
2. 
   Frequency ModulatorSecret

   Steam withholds the description of a secret achievement.
   19%
3. 
   Becoming a Monster

   When you become a monster, be careful not to fight one
   88%
4. 
   Smarter than a Forest Critter

   You won a game of fox and hounds against a forest critter and lived to tell the tale
   68%
5. 
   Reality Check

   You snapped back into reality, or did you?
   79%
6. 
   Smarter Than a Bird

   You won a game of crab-checkers against the Seagul
   59%
7. 
   Brain Jello

   Complete the Jellyfish puzzle
   68%
8. 
   Sail Away

   Survived the ocean and sailed away
   74%
9. 
   Enter the Dragon

   You entered the dragon cave (not a reference to the Bruce Lee movie)
   64%
10. 
    Exit the Dragon

    You exited the dragon cave (see, there is no Bruce Lee movie by that name)
    63%
11. 
    Giant CatSecret

    Steam withholds the description of a secret achievement.
    52%
12. 
    Inception

    A dream within a dream
    63%
13. 
    That's Gross!Secret

    Steam withholds the description of a secret achievement.
    57%
14. 
    Chicken Run

    You broke out of prison thanks to a chicken
    58%
15. 
    Usurper

    That was a nice usurpation!
    58%
16. 
    Lonesome GeorgeSecret

    Steam withholds the description of a secret achievement.
    19%
17. 
    CrybabySecret

    Steam withholds the description of a secret achievement.
    58%
18. 
    HomecomingSecret

    Steam withholds the description of a secret achievement.
    56%
19. 
    Dream JobSecret

    Steam withholds the description of a secret achievement.
    57%

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 19 of them.