Here is the full list of all 16 Galactic Incoming achievements.
Level 1 Completed
Level 2 Completed
Level 3 Completed
Level 4 Completed
Level 5 Completed
Level 6 Completed
Level 7 Completed
Level 8 Completed
Level 9 Completed
Level 10 Completed
Level 11 Completed
Level 12 Completed
Level 13 Completed
Level 14 Completed
Level 15 Completed
INSANE User