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