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