Survive the first wave

Survive until the Fifth Wave

Survive until the Twentieth Wave

Survive the first two waves without firing a gun

Kill 5 zombies during a game before they crawl completely out of the earth

Collect as many points until you have 10,000 in a row

Explore the map by opening all the doors

Kill 10 zombies simultaneously with just one grenade

Avoid all damage taken in the first 10 Waves

Stay the first 5 waves in the starting building