Here is the full list of all 30 The Copper Canyon Shoot Out achievements.
Got your first head shot!
Shot an enemy's arm off!
Shot an enemy in the boiler!
Completed the Town!
Completed the Canyon!
Completed the Mines!
Got a three star rating in the Town!
Got a three star rating in the Canyon!
Got a three star rating in the Mines!
Got a three star rating in every level!
Blasted a mortar out of the air!
Shot 25 mortars out of the air!
Shot off 100 heads in one level playthrough!
Shot off 100 limbs in one level playthrough!
Shot 100 boilers in one level playthrough!
Shot off 1000 heads!
Shot off 1000 limbs!
Shot 1000 boilers!
Beat a level without dying!
Shot off all of the Sheriff's arms!
Kill the Sheriff by removing only one shield section and leaving all of his arms intact!
Threw a health bottle to heal!
Drink a health bottle to heal!
Shoot a health bottle to heal!
Holster a shotgun!
Get a kill with a two handed shotgun blast!
Beat the par time for the Town!
Beat the par time for the Canyon!
Beat the par time for the Mines!
Beat the par time for every level!