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