| Achievement | How to unlock
|
|---|
| - Complete all challenge chapters
|
| - Completed story chapter 8 on normal difficulty or harder without building a repair station
|
| - Reach wave 25 in Arcade mode
|
| - Complete all story chapters on Hard difficulty
|
| - Get hero medals from all story chapters on Hard difficulty
|
| - Reach wave 3 in Arcade mode
|
| - Achieve a total score of 10 000 000 or more
|
| - Complete the first level.
|
| |
| - Complete all challenge chapters on Hard difficulty
|
| - Finish a level on normal difficulty with 3 x the amount of money needed for the investor medal
|
| |
| - Reach wave 50 in Arcade mode
|
| - Deploy the Black Hole for the first time.
|
| - Complete all challenge chapters on Unstoppable difficulty
|
| |
| |
| - Complete a level using only one satellite type.
|
| |
| |
| - Achieve hero medals from 5 different story chapters
|
| - Get all the performance medals in one level in a single try.
|
| - Spend more than $15,000 in one level.
|
| |
| |
| - Achieve hero medal in story chapter 3 on normal difficulty or harder without building a single Blast Cannon
|
| - Complete all story chapters on Unstoppable difficulty
|
| - Get hero medals from all story chapters on Unstoppable difficulty
|
| - Complete any level on unstoppable difficulty.
|
