Successfully complete the indicated task to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", "My profile", "View all my games", then the game and view stats.
- Aliens Go Home: Finish 3 missions on 3 stars.
- All Clear: Finish 12 missions on 3 stars.
- Defcon 1: Fire all superweapons in a single wave.
- Endangered Species: Collect 100 Dancing Aliens.
- Fiscal Responsibility: Save 1,000 or more credits in a single mission.
- Gun Forest: Place 50 weapons in a single mission.
- Industrial Complex: Build all weapons in a single mission.
- Quality Over Quantity: Upgrade 5 weapons to the max in a single mission.
- Take A Day Off, Doc: Finish 5 missions without the Research Unit.
- Xenocide: Kill 30,000 aliens.