Kill 110% or more of all wizards
Deal more than $1000000 in property damage in a level without killing anyone.
Kill a wizard twice and end the level with them dead
Kill everyone (including civilians), and end the level with everyone alive.
End the level with all eagles and chickens alive and no other enemies alive.
Bury 100 bodies
Kill 100 eagles
Get War stamp on a defense mission
Beat ten levels with the fire hose
Get War Stamp with the fire hose without using secondary fire or running anyone over.
Kill all enemies in a mission by running them over.
Kill five Brainmasters with melee attacks as Zero Tank.
Get Peace award on all levels.
Get No Shots Fired award on all levels.
Get Master Silencer Award on all levels.
Get War award on all levels.
Get Perfect Shot award on all levels.
Get Indomitable Warrior award on all levels.
Beat every level with Wizard.
Beat every level with Zero Tank.
Beat every level with Tank.
Finish the Vacation campaign.
Finish the Crystallize campaign.
Finish the Intro campaign.
Finish the Spooky campaign.
Finish the Supply Lines campaign.
Finish the Winter Wonderland campaign.
Finish the Paperworks campaign.
Finish the Emperor's New Home campaign.
Finish the 2 years later campaign.
Stop all the clocks in It Gets Deeper
Beat the Noose Anchor level peacefully.
Beat every dialogue tree with both players speaking in co-op.
Fail every dialogue tree by making the wrong choices.
Skip every negotiation