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