Here is the full list of all 45 Paranautical Activity: Deluxe Atonement Edition achievements.
Complete a hole floor without falling in.
Beat any mode with David Bowie
Complete a room without attacking.
Kill 1000 Jimbaabwehs.
Spend all your money gambling.
Have 1000 coin dollars.
Complete a floor without taking damage.
Get a ghost and survive the floor.
Beat any mode with Gilead
Beat classic mode.
Kill Dahlia without taking damage.
Kill Dahlia.
Let a boss die to poison.
Beat the sixth floor.
Survive a dark floor.
Fall into a hole in a hole floor.
Kill 100 Gileads.
Beat the fourth floor.
Run out of superweapon ammo.
Beat the second floor.
Kill a Tenchi while it's invisible.
Have more armor than health.
Complete a room without taking damage.
Complete a floor without jumping.
Have 69 bombs.
Have 30 items at once.
Beat any mode in under 15 minutes.
Figure out how to get to the 8th floor.
Beat hardcore mode.
Beat any mode with Tank.
Beat any mode with Bouncer
Beat any mode with Gorton
Beat any mode with Dynomite.
Beat any mode without taking items.
Beat Hardcore Mode with all 6 characters.
Beat hardcore mode 10 times.
Beat 4 floors in a row using only melee attacks.
Beat hardcore mode without spending money.
Beat hardcore mode having gone into every room.
Spawn two ghosts at once.
Kill Dahlia after she spawns every set of enemies. Twice.
Kill every boss.
Get every item.
Use every weapon.
Get every achievement.