Here is the full list of all 26 Somewhere on Zibylon achievements.
Complete the 12th level
Launch the 12th level
Complete the 11th level
Launch the 11th level
Complete the 10th level
Launch the 10th level
Complete the 9th level
Launch the 9th level
Complete the level 0
Complete the 8th level
Launch the 8th level
Complete the 7th level
Launch the 7th level
Complete the 6th level
Launch the 6th level
Complete the 5th level
Launch the 5th level
Complete the 4th level
Launch the 4th level
Complete the 3rd level
Launch the 3rd level
Launch the level 0
Complete the 2nd level
Launch the 2nd level
Complete the 1st level
Launch the 1st level