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