33.33%
Make It Quick
Complete a mission using zero EMP towers.
33.33%
Impressive
Earn a Gold medal or better on all missions.
33.33%
Oesti Approved
Earn a Platinum medal or better on all missions.
33.33%
Resourceful
Complete a mission with fliers using no Homing Missile towers.
33.33%
Not Bad
Earn a Silver medal or better on all missions.
33.33%
Stop The Invasion
Complete all of the missions.
66.67%
Pick Your Target
Change the targeting priority of 5 different towers in a mission.
66.67%
Efficiency
Have a single tower destroy more than 100 Spoids in a mission.
66.67%
Unstoppable
Last 15 minutes in an infinite wave mode mission.
66.67%
Fully Covered
Have a tower occupy every available spot on a mission.
66.67%
Big Spender
Build 500 unrecycled towers.
100.00%
T'Reined
Complete the Defense Training mission.