Kill 20 enemies before the instakill buff runs out.

Survive your first night.

Survive your first week.

Survive for two week.

Survive for 28 consecutive days.

Survive a total of 28 weeks.

Take an accumulative damage of 1000 without dying.

Take an accumulative damage of 2000 without dying.

Don't move and survive a night.

Don't move and survive for 10 consecutive nights.

Survive for 10 nights in a row without owning any buildings.

Survive a night with a full party.

Survive 15 nights in a row without changing weapon.

Survive 10 nights in a row without using any other weapon than the Pistol.

Survive 10 nights in a row without using any other weapon than the AK-47.

Survive 10 nights in a row without using any other weapon than the M16.

Survive 10 nights in a row without using any other weapon than the MP5.

Survive 10 nights in a row without using any other weapon than the Rocket Launcher.

Survive 10 nights in a row without using any other weapon than the Shotgun.

Survive 10 nights in a row without using any other weapon than the UZI.

Survive a night without taking any damage.

Survive 10 nights in a row without taking any damage.

Kill 10 ghouls.

Kill 50 ghouls.

Kill 100 ghouls.

Kill 10 skeletons.

Kill 50 skeletons.

Kill 100 skeletons.

Kill 10 necromancers.

Kill 50 necromancers.

Kill 100 necromancers.

Purchase all the weapons

Build a Tiny Barricade.

Have max towers allowed activate at one time.

Build a Machine Gun Tower.

Build a Large Barricade.

Have 5 buildings alive at the same time.

Kill 10 enemies with the Pistol.

Kill 50 enemies with the Pistol.

Kill 100 enemies with the Pistol.

Kill 10 enemies with the AK-47.

Kill 50 enemies with the AK-47.

Kill 100 enemies with the AK-47.

Kill 10 enemies with the M16.

Kill 50 enemies with the M16.

Kill 100 enemies with the M16.

Kill 10 enemies with the MP5.

Kill 50 enemies with the MP5.

Kill 100 enemies with the MP5.

Kill 10 enemies with the UZI.

Kill 50 enemies with the UZI.

Kill 100 enemies with the UZI.

Kill 10 enemies with the Shotgun.

Kill 50 enemies with the Shotgun.

Kill 100 enemies with the Shotgun.

Kill 10 enemies with the Rocket Launcher.

Kill 50 enemies with the Rocket Launcher.

Kill 100 enemies with the Rocket Launcher.

Run 42.195 kilometres.

Run 10 kilometres.

Run 100 kilometres.

Run 1 mile... whatever that is?

Survive 10 consecutive nights without spending any money.

Spend 4000 gold during one day.

Save up 7000 gold without spending anything.

Have three powerups active at the same time.

Collect a total of 50 powerups.

Collect a total of 10 powerups.

Kill an enemy with the instakill buff.

Kill 536 enemies.