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