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