Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Addicted	Spend all your money gambling.
Bottom Feeder	Complete a floor without jumping.
Bouncer	Beat any mode with Bouncer.
Bowie	Beat any mode with David Bowie.
Child Abuse	Kill Dahlia.
Chosen One	Kill a Tenchi while it's invisible.
Completionist	Beat hardcore mode having gone into every room.
Dynomite!	Beat any mode with Dynomite.
Finders Keepers	Get every item.
Frugal	Beat hardcore mode without spending money.
Genocidal	Kill 1000 Jimbaabwehs.
Gilead	Beat any mode with Gilead
Good Start	Complete a room without taking damage.
Gorton	Beat any mode with Gorton.
Gotta Go Fast	Beat any mode in under 15 minutes.
Heavy Hitter	Beat 4 floors in a row using only melee attacks.
Heh Heh Heh	Have 69 bombs.
Jack of All Trades	Beat Hardcore Mode with all six characters.
Moneybags	Have 1000 coin dollars.
Monster Hunter	Kill every boss.
Nazi Hell	Beat the fourth floor.
Nazi Killer	Beat the sixth floor.
Night Vision	Survive a dark floor.
Not Even Worth It	Let a boss die to poison.
One Man Armory	Use every weapon.
OP	Have 30 items at once.
Pacifist	Complete a room without attacking.
Padded	Have more armor than health.
ParaNUT	Get every achievement.
Picky Eater	Beat any mode without taking items.
Progress	Beat the second floor.
Redial	Spawn two ghosts at once.
Serious Player	Beat hardcore mode 10 times.
Sure Footing	Complete a hole floor without falling in.
Tank	Beat any mode with Tank.
There's More?	Figure out how to get to the 8th floor.
Too Easy	Kill Dahlia without taking damage.
Tough Guy	Kill 100 Gileads.
True Victory	Beat hardcore mode.
Twice The Fun	Kill Dahlia after she spawns every set of enemies. Two times.
Tyrus	Run out of superweapon ammo.
Unsure Footing	Fall into a hole in a hole floor.
Untouchable	Complete a floor without taking damage.
Victory!	Beat classic mode.
Who ya gonna call?	Get a ghost and survive the floor.