Here is the full list of all 13 Neon Junctions achievements.
Complete the secret level
Сomplete the game
Complete the twenty-eighth level
Complete the twenty-first level
Complete the fourteenth level
Restore electricity
Complete the seventh level
Complete the level with 49 cubes
Collect 99 cubes
Spend three minutes to complete one level
Die
Complete the first level
Finish the level in under 20 seconds