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