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