Here is the full list of all 23 Duck Season PC achievements.
Don't shoot the dog in a playthrough
A better game
Set the table for dinner
Flip the sign in the game world
Shoot the sitting duck in the game world
Use the Kid Wizard Book
Throw something out the window
Cannon Ending
Kill 100 Ducks
Inspect the globe
Kill two ducks with one shot
What time is it really?
Shoot the dog more than once in a playthrough
Tried to get Mom's attention
Dog
Stuck forever
Platoon ending
Shot the sun with the golden shell
Its over, you lose
Shoot all the cattails in game world
Beat All Cartridge Games
Watch all the VHS tapes
Survive the zombie attack