Here is the full list of all 45 Gunman Tales achievements.
Eat 100x Mushroom
Drink 10x Firewater
Throw 100x Dynamite
Drink 10x Health Potion
Die 100 times
Drink 10x Antivenom Potion
Find the Alien Corpse
Visit the Indian Shaman 100x
Finish the Game on the "Clint Westwood" Difficulty
Rest 100x in Your House
Visit the Old Mine 100x
Gather 1K Dollars
Use Medallion of Luck 10x
Let Yourself be Killed by a Werewolf
Bring a curse of "horse poop" upon yourself!
Finish the Game on the "ThumbSucker" Difficulty
Shoot the Goldfish 100x
Visit the Saloon 100x
Donate 100 Coins for the Doctor
Find the Legendary Lost Treasure!
Finish the Game
Find All Pieces of the Map
Catch the 50 Cows
Slay the legendary Werewolf
Visit 100x One of the Two Cities
Win Stage 5
Win Stage 4
Win Stage 8
Destroy 10 Cow Skull
Use Old Spyglass
Win Stage 7
Win Stage 10
Find the outlaw Dirty Willy and bring him back ...DEAD OR ALIVE.
Kill 1K Enemies
Win Stage 11
Shoot the Chicken 100x
Win Stage 12
Win Stage 9
Win Stage 6
Make 100x Combo!
Win Stage 3
Win Stage 2
Win Stage 1
Obtain Boots of Haste
Kill Your First Enemy