Easy "Abandon all hope ye who ...
	Easy "Challenger" Achievement...
	Easy "Watch your steps" Achiev...
	Various Achievements...

Start defensive mode as the man and don't shoot any bullets just die.

You can play a local match. One Deathmatch lasts five minutes. The achievement pops after the match ends.

This has to be done in Defense mode. First survive until night 9. E.g. get a chainsaw in wave 2 and save up. Then buy all the discounted mines you can until night 9. You should easily get something like 200 mines. Then plant them literally everywhere you can (there's a roughly circle-shaped area around the light pole that you can plant structures). Then stand in the middle of the level by the light pole and do nothing (you may walk if necessary).

Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Arsonist	Kill 70 enemies with flamethrower in one night in defense mode	30
Beginner	Survive for 2:00 in endless night mode	30
Captain	Score 250,000 points in defense mode	30
Challenger	Play through a deathmatch game	30
Cheap and reliable	Kill 300 zombies with shotgun in a single game in defense mode	30
Colonel	Score 1,000,000 points in defense mode	100
Combat mastery	Survive 10 nights without any barricades, turrets or mines	30
Come get some	Build and equip four turrets	30
Corporal	Score 30,000 points in defense mode	20
Demolition	Kill 8 zombies with a single rocket in defense mode	30
Efficient usage	Use no more than 6 clips during the first night	30
Grenadier	Survive night 7 or higher using grenades only	30
Lieutenant	Score 150,000 points in defense mode	30
Lumberjack	Survive night 7 or higher using chainsaw only	30
Major	Score 500,000 points in defense mode	50
Not so fast	Have 25 enemies frozen at the same time in defense mode	30
One shot, many kills	Kill 8 zombies with a single sniper rifle bullet in defense mode	30
Precise cut	Kill 15 enemies with a single laser beam	30
Private	Score 10,000 points in defense mode	20
Saving up	Survive 6 nights without buying anything	30
Sergeant	Score 80,000 points in defense mode	20
Survivor	Survive for 3:30 in endless night mode	50
Untouchable	Survive 10 nights without taking any damage	50
Veteran	Survive for 5:00 in endless night mode	50
Watch your steps	Survive night 9 or higher using mines only	30