Here is the full list of all 24 Shot in the Dark achievements.
Can't shoot when you are out of bullets...
Complete Red Eye Rush without missing
Just making sure
Beat a level without waking the Gargoyles
Tried shooting an indestructible box
Shot a cactus
Complete "Pits n' Pillars" without firing a shot
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
Tried shooting a wanted poster
Defeat Satan without missing a shot
Shoot a blind one in the dark