Complete the indicated task to unlock the achievement.

Achievement	How to unlock
A SPACE ODYSSEY	Analyze all monoliths.
ALL OR NOTHING	Earn all perks.
ALMIGHTY	Unlock all achievements.
ALPHA LEADER	First special force.
ARCHITECT	Build 500 towers.
ARMED TO THE TEETH	Complete the tech tree.
BUTCHER	Kill 2.500 zombies.
CONSTRUCTOR	Build 50 towers.
DON'T HURT ME	Build the lander shield.
ENGINEER	Build 100 towers.
FEARLESS	Call an early wave.
FIRST ARMS FACTORY	Build an arms factory.
FIRST KILL	Kill 1 zombie.
FIRST PERK	Earn 1 perk.
FIRST TECH CENTER	Build a tech center.
FULL METAL JACKET	Max a tower.
HELL YEAH	Kill 20 zombies in FPS mode.
HIGH FIVE	Earn 5 perks.
LASER MASTER	Kill 200 bomber by laser tower.
LORD RAIDEN	Deactivate 30 electro shields by tesla.
MASSACRE	Kill 25 zombies at once by nuke.
MY FIRST RESEARCH STUDY	Research a new tower.
NO ONE CAN STOP ME	Use 4 different super weapons in a single mission.
PARAMEDIC	Heal a crew member.
PHOTOGRAPHER	Take a screenshot.
PRACTICE, PRACTICE, PRACTICE	10 special forces in one mission.
STOP!	Stop 10 runner zombies by freeze ray.
SUB-ZERO	Extinguish 20 pyro zombies by freeze ray.
TERMINATOR	Kill 10.000 zombies.
THE CHALLENGING END	Complete all missions of the campaign in challenge mode.
THE END	Complete the campaign.
TOWERS? WHICH TOWERS?	Win a mission without building a tower.
TRAITOR	Kill a mutated crew member.
UNLOCK THE TRUTH	Use all monoliths in mission 20.
YOUR FIRST SUPER WEAPON	Use a super weapon.