Here is the full list of all 45 Paranautical Activity: Deluxe Atonement Edition achievements.
Beat any mode with Tank.
Spend all your money gambling.
Beat hardcore mode.
Figure out how to get to the 8th floor.
Kill Dahlia without taking damage.
Get a ghost and survive the floor.
Beat any mode with Bouncer
Beat classic mode.
Kill Dahlia.
Beat the sixth floor.
Have 69 bombs.
Let a boss die to poison.
Have 1000 coin dollars.
Complete a floor without taking damage.
Kill 100 Gileads.
Complete a floor without jumping.
Complete a room without attacking.
Kill a Tenchi while it's invisible.
Have more armor than health.
Run out of superweapon ammo.
Beat the fourth floor.
Survive a dark floor.
Fall into a hole in a hole floor.
Beat the second floor.
Complete a room without taking damage.
Complete a hole floor without falling in.
Have 30 items at once.
Beat any mode in under 15 minutes.
Kill 1000 Jimbaabwehs.
Beat any mode with Gilead
Beat any mode with Gorton
Beat any mode with David Bowie
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.