Liberator
Complete all game levels
Blood Lust
Kill 100 aliens
Bloodbath
Kill 1000 aliens
Good start
Liberate the first planet
Armada
Call for 50 friendly units
Numerical Superiority
Call for 20 friendly units during the battle
Specialist
Upgrade one unit till 10th level
Air supply
Use airstrike 100 times
Fire in the hole
Throw 300 grenades
Perfectionist
Get 5 stars for all game levels
Invincible
Complete any level of the last planet without loss of friendly units
Master of defense
Upgrade the base till 5th level
Air force
Upgrade airstrike till 7th level
Elite only!
Call for 5 Heavy laser gunners during the battle
Hell
Call for 20 Flamethrowers during the battle
Mean
Accumulate 1000 energy units during the battle (can't be achieved on "Resources refill" and "Final Step" levels)
Extreme
Win the battle with lower than 50% health level of your base
Great commander
Upgrade all friendly units till 4th level
Professional
Complete the game on extreme level of difficulty
Phantom warrior
Have 10 Snipers simultaneously present during the battle