Here is the full list of all 8 The Game Store achievements.
Finish First Dreamer without turning off the alarm clock
Get a score of 50 or more on DaVinci's Flying Machine
Discover another way
Play First Dreamer without permission
Finish the First Dreamer game
Get a score of 2500 or more on Steel Wolf
Get a score of 500 on Radical Skater
Get a score of 1500 on Pot Pie