Defense Grid achievements

6.13%

Planet Defender

Earn at least a silver medal on all Story mode missions in The Awakening campaign.

10.97%

Nail Biter

Win a mission with the last remaining core less than 10 seconds away from the map exit.

11.29%

Siege Breaker

Survive all 99 waves on any Grinder challenge mode.

13.55%

Base Defender

Complete the Story mode in The Awakening campaign.

14.52%

Tower Expert

Build at least one of every tower type and available upgrade.

47.10%

Death From Above

Fire the orbital laser.

61.61%

Exterminator

Destroy 1000 aliens.

70.32%

Flawless Victory

Earn at least one gold medal in any mission after The Awakening.

83.87%

Salvage Rights

Destroy at least one boss alien.

91.61%

Field Promotion

Earn at least one silver medal in any mission after The Awakening.