Kill 1 alien.

Kill an alien carrying a power core.

Recover a loose core.

Earn at least one silver medal.

Build 5 Gun towers.

Kill 100 aliens.

Win with 1,000 resources remaining.

Activate reconnaissance system.

Build 5 Inferno towers.

Upgrade a tower.

Destroy at least one boss alien.

Save a core less than 10 seconds away from the map exit.

Build 5 Laser towers.

Inspect 10 aliens.

Win with 5,000 resources remaining.

Build 20 towers in one mission.

Finish the first 3 missions.

Earn at least one gold medal.

Use speed up controls for a total of 30 seconds in any one mission.

Destroy 1000 aliens.

Shoot down a flying alien.

Build 5 Meteor towers.

Build 5 Temporal towers.

No towers sold in a single mission.

Build 5 Cannon towers.

Sell 5 towers.

Build 5 Tesla towers.

Win with 10,000 resources remaining.

Build 6 towers within 10 seconds.

Shoot down flying alien carrying a core.

Build 5 Missile towers.

Reload an earlier save checkpoint.

Fire the orbital laser.

Build 5 Concussion towers.

Build 50 towers in one mission.

Kill 10,000 aliens.

Build 5 Command towers.

Reload an earlier save checkpoint five times in a single mission.

Complete the Story mode.

Sell 10 towers in a single mission.

Witness 1 core handed off 10 times within 20 seconds.

Build every tower and upgrade.

Build all tower types in one mission.

Beat an advanced mission with only level 3 towers and no selling.

Beat an advanced mission with only level 1 towers.

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

Survive 100 waves on the Grinder challenge mode.

Alien time until exit exceeds 5 minutes.

Beat an advanced mission with zero cores captured.

Earn a gold medal on an adrenaline challenge mode.

Beat an advanced mission with only Gun towers.

Earn a silver medal on all missions in the Story mode.

Gain 10000 resources from interest in a single mission.

Kill 50,000 aliens.

Earn at least a silver medal on the Story or Story Challenge mode of Divided Attention.

Survive 100 waves on any Super Grinder challenge mode.

Beat an advanced mission with only Cannon towers.

Earn a gold medal on all missions in the Story mode.

Build all upgrades of all tower types in one mission.

Begin playing any mode of the Containment Campaign.

Earn a bronze medal on all story missions in the You Monster campaign.

Beat all 5 "Out of Bullets" challenge modes without using Gun or Cannon towers.

Earn at least a Bronze medal on all eight Story modes in the Containment campaign.

Earn a Gold medal on any Containment mission without going back to a save checkpoint.

Earn a gold medal on any story mission past 'Divided Attention' in the You Monster campaign.

Earn a gold medal on any 35 missions in the You Monster campaign.

Earn a gold medal on all story challenge missions in the You Monster campaign.

Earn a gold medal on the Story and Story Challenge modes of Ghost in the Machine and Divided Attention.

Earn a gold medal on the Campaign mode of Risk Exposure and Roundabout.

Earn a gold medal on the Campaign mode of Urban Planning and Tactical Diversion.

Prevent the aliens from stealing a core until they have arrived safely at the second core housing in the Story or Story Challenge mode of Auger.

Earn a gold medal on the Campaign mode of Service Interruption and Height of Confusion.

Earn a Gold medal on all 40 modes in the Containment campaign.

Earn a gold medal on 10 challenge modes in the You Monster campaign.

Beat an advanced mission with only Inferno towers.

Earn at least a Bronze medal on all 40 modes in the Containment campaign.

Earn a gold medal on any 100 missions in The Awakening campaign.

Earn a silver medal on all story missions in the You Monster campaign.

Earn a Gold medal in the Campaign Reversed mode of Passage without building any Meteor or Missile towers or using the Orbital Laser.

Earn a gold medal on all the modes of Overflow.

Earn a gold medal on the Campaign mode of Kill Zone and Overflow.

Earn at least a Bronze medal on the Story or Story Challenge mode of Foothold building ten towers or less without selling.

Earn a gold medal on any 150 missions in The Awakening campaign.

Earn at least a Bronze medal on the Story or Story Challenge mode of Occupation using only Gun, Inferno, and Laser towers.

Earn a Gold medal on the Story or Story Challenge mode of Volition building fifteen towers or less without selling.

Earn a Gold medal on all eight Story modes in the Containment campaign.

Earn a gold medal on all story missions in the You Monster campaign.