Destroy 1,000 enemies

Complete a map other than Easy Street without the base taking damage

Reach level 20

Reach level 20 with all player characters

Complete any map on hard, other than Easy Street without taking damage

Destroy 10,000 enemies

Complete 5 maps in multiplayer

Destroy an Annihilator before it deploys

Spend more than $7,500 in any map other than Easy Street

Complete any map other than Easy Street without any structure kills

Destroy 10 enemies with the Rifle in 5 seconds

Destroy 5 flying enemies in 5 seconds with the shotgun

Complete any map other than Easy Street using only infantry

Destroy 20 enemies within 1 second

Freeze 10 enemies within 1 second

Set fire to 10 enemies simultaneously

Destroy 50 enemies using Tesla Coils in any single map other than Easy Street

Throw 10 enemies at once with the Cryo Blaster secondary attack

Destroy 200 flying enemies

Defeat the Juggernaut

Place 1000 structures

Sell 1000 structures

Survive 10 waves of Invasion Mode

Defeat the Stalker

Fail a map more than 5 times

Unlock every structure and weapon

Complete every map on normal difficulty

 

Complete every map on hard

 

Complete all maps on insane

(1) 

Survive to wave 20 in Invasion mode on hard