Here is the full list of all 79 Westerado: Double Barreled achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Unlock all hats at the Haberdasher.
You just became the biggest star here, since there isn't anyone left except for a few extras.
You found all the endings!
It sh*ts money
Unfold the secret of the animal statues.
Too much PDA, bro.
Like playing monopoly
Can't read my...
The banditos are back to causing trouble.
Sister got the river in Santa Anna flowing again.
He shot you? That's not what is supposed to happen.
Talk to Oilrig Manager at every drilling location.
Come on now, what did those lizards ever do to you?
Beat the game with less then 20 kills
Keep Rancher Bob, Bell and Cobb alive during the Mansion Attack.
You just can't keep your hands off the stuff.
Sheriff's worse than when you met him
The sheriff helped you 3 times
It speaks louder than words.
Mrs. Tressabell Johnston
Your Dad was the Murderer.
He has such great personalities
Lost Miner reunited with Miner's Wife.
Lost Miner and Miner's Wife both move on.
Find the Movie Set
Mrs. Tressabell Sheriff
Sheriff's back to kicking Ass
From mayhem to meats, the Beefheads did it all
Beat the game without getting shot
Beat the game in less than an hour
Beat the game as the Brother
Your mother loved an Indian, and was hiding them in the walls.
They were all in on it!
Mrs. Tressabell Gunslinger
Beat the game as the Sister
A place to start over.
The Beefheads playing for the other side
Magnificent might be a bit of stretch, but the Seven part is undeniable.
Peace between Indians and Military
A side of justice with your revenge?
Your family wouldn't give up their land.
Unlock all playable Characters
Trains back in town
Keep all buffalo alive during a Buffalo Drive.
They read it, you weep.
Finally got that Miner's Hat.
Beat the game as the Indian
Two thousand dollars in the bank. It's a lot of money. Takes me three years to earn it!
That buffalo wasn't even wearing the right hat.
He had it coming to him.
You know exactly what's on his person.
Retake our land!
Help the Indians get past the Military Blockade.
Free all of the Buffalo enslaved by the Ranchers.
Rancher Franchise Made.
Prevent any packages from being stolen during the Carriage Protection.
Unlock all Weapons
You pretty much shot more people than actually exist, congratulations!
This again? We know we just gave you a gun, but you might not want to shoot everyone.
Beat the game as the Gunslinger.
You were the Murderer.
Don't go thinking you're Annie Oakley, those three hatshots in a row were just a fluke.
Explore all the things
Digging beyond the veil.
Where do you think you're going?
Explore more
Explore 100% of the map
Dispatching justice will require style!
Obviously you had to shoot all those people, they were coming right for you!
Now where is that deputy?
Buffalo wearing hats and stripes.
Convince the Ticket Salesman that you're from the Transcontinental Express.
Explore 50% of the map
Soberly together again.
Bla, bla, bla. You just keep jabbering on.
So you had to shoot a few people, right? No big deal.
Make the graveyard safe to visit.
Sadly we have no knives, so you won't be running any faster.
Onwards, adventure awaits!