Here is the full list of all 24 Shot in the Dark achievements.
Complete "Pits n' Pillars" without firing a shot
Just making sure
Complete Chapter 1 without dying
Complete Chapter 2 without dying
Complete Chapter 3 without dying
Complete Chapter 4 without dying
Complete Chapter 5 without dying
Complete Chapter 6 without dying
Complete Chapter 7 without dying
Complete "Thread the Needle" without firing a shot
Beat "The Gauntlet" without firing a shot
Complete the final chapter without dying
Complete the whole game without dying
Beat the game
Defeat Satan
Shoot a Red Bullet
Beat a level without waking the Gargoyles
Shot a cactus
Tried shooting an indestructible box
Tried shooting a wanted poster
Complete Red Eye Rush without missing
Defeat Satan without missing a shot
Can't shoot when you are out of bullets...
Shoot a blind one in the dark