Have an exploding zombie killed by another exploding zombie

Survive 10 nights without any barricades or turrets

Survive 6 nights without buying anything

Survive 10 nights without taking any damage

Use no more than 6 clips during the first night

Kill 8 zombies with a single rocket

Score 10,000 points

Score 30,000 points

Score 80,000 points

Score 150,000 points

Score 250,000 points

Score 500,000 points

Score 1,000,000 points

Kill 300 zombies with shotgun in a single game

Kill 8 zombies with a single sniper rifle bullet

Build and equip four turrets