Saving up

Survive 6 nights without buying anything

30 Gamerscore

Combat mastery

Survive 10 nights without any barricades, turrets or mines

30 Gamerscore

Untouchable

Survive 10 nights without taking any damage

50 Gamerscore

One shot, many kills

Kill 8 zombies with a single sniper rifle bullet in defense mode

30 Gamerscore

Demolition

Kill 8 zombies with a single rocket in defense mode

30 Gamerscore

Cheap and reliable

Kill 300 zombies with shotgun in a single game in defense mode

30 Gamerscore

Efficient usage

Use no more than 6 clips during the first night

30 Gamerscore

Come get some

Build and equip four turrets

30 Gamerscore

Private

Score 10,000 points in defense mode

20 Gamerscore

Corporal

Score 30,000 points in defense mode

20 Gamerscore

Sergeant

Score 80,000 points in defense mode

20 Gamerscore

Lieutenant

Score 150,000 points in defense mode

30 Gamerscore

Captain

Score 250,000 points in defense mode

30 Gamerscore

Major

Score 500,000 points in defense mode

50 Gamerscore

Colonel

Score 1,000,000 points in defense mode

100 Gamerscore

Beginner

Survive for 2:00 in endless night mode

30 Gamerscore

Survivor

Survive for 3:30 in endless night mode

50 Gamerscore

Veteran

Survive for 5:00 in endless night mode

50 Gamerscore

Don't fear the reaper

Kill a reaper

100 Gamerscore

Challenger

Play through a deathmatch game

30 Gamerscore

Watch your steps

Survive night 9 or higher using mines only

30 Gamerscore

Grenadier

Survive night 7 or higher using grenades only

30 Gamerscore

Lumberjack

Survive night 7 or higher using chainsaw only

30 Gamerscore

Arsonist

Kill 70 enemies with flamethrower in one night in defense mode

30 Gamerscore

Not so fast

Have 20 enemies frozen at the same time in defense mode

30 Gamerscore

Precise cut

Kill 14 enemies with a single laser beam

30 Gamerscore

Abandon all hope

Abandon all hope ye who enter here

30 Gamerscore