Here is the full list of all 30 Unstoppable Gorg achievements.
Kill 50 enemies with beam link rays
Complete the last level.
Complete all story chapters on Hard difficulty
Complete all story chapters on Unstoppable difficulty
Deploy the Black Hole for the first time.
Reach wave 50 in Arcade mode
Spend more than $15,000 in one level.
Completed story chapter 8 on normal difficulty or harder without building a repair station
Get 8 upgrade tokens.
Meet the Radiant Beem.
Achieve a total score of 10 000 000 or more
Achieve hero medals from 5 different story chapters
Meet Sereia.
Reach wave 25 in Arcade mode
Defeat a mothership.
Defeat 1000 aliens.
Reach wave 3 in Arcade mode
Shoot 10 asteroids
Achieve hero medal in story chapter 3 on normal difficulty or harder without building a single Blast Cannon
Check the credits
Finish a level on normal difficulty with 3 x the amount of money needed for the investor medal
Complete a level using only one satellite type.
Complete any level on unstoppable difficulty.
Get all the performance medals in one level in a single try.
Complete the first level.
Get hero medals from all story chapters on Hard difficulty
Get hero medals from all story chapters on Unstoppable difficulty
Complete all challenge chapters
Complete all challenge chapters on Hard difficulty
Complete all challenge chapters on Unstoppable difficulty