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