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