Fightin' Around the World

 is an achievement in Red Dead Redemption.

Description
"Knock someone out in melee in every saloon in the game in Single Player."

Guide
Basically, punch someone until they fall over in every saloon in the game. This can be difficult in some places, as the victim's friends will usually join in and back him up as well, making the whole thing a complete brawl. It takes 9 unblocked punches to connect to the victim in order for them to be knocked out.

Locations
There are 7 towns with saloons across the world that are part of this achievement. Some of these towns may be in areas not unlocked at the beginning of the game, the territories and their cities containing saloons are:

In New Austin:

 * Armadillo


 * Rathskeller Fork


 * Thieves Landing

In Nuevo Paraiso:

 * Casa Madrugada


 * Chuparosa


 * Escalera

In West Elizabeth:

 * Blackwater

Tips & Tricks

 * Lawmen can be lured into saloons by targeting them with the fists "equipped" and running into the saloon, making sure they are following Marston. Once both inside, proceed to knock out the lawman.
 * If having a high honor level, it may be hard to do the Thieves' Landing knockout as the community will shoot on sight. To negate this, wear a gang outfit within Thieves' Landing, and avoid wearing the U.S Marshal Uniform, U.S. Army Uniform, or the Bureau Uniform, as these will lead to being attacked by the entire community.
 * A good target in most saloons is the bartender, as they're most likely unarmed and easily cornered behind the bar. This approach buys the player time enough for a knockdown, as angered patrons coming to assault you would have to make their way behind the bar.
 * It's easier to complete by first knocking down the opponent by running into them, then standing over them and continue punching.
 * If the fight spills out into the street, it will not count. It needs to knock the person out inside the saloon for the achievement to trigger.
 * Obtain very low honor, so that Marston will not be attacked by lawmen unless committing murder. Also, don't attack lawman, or Marston will get a bounty instead. They generally have a gun, and do not leave the saloon with the terrified mob if being started to beat someone up.
 * If everyone but lawmen leave the saloon, exit it, and look away for a few seconds. When re-entered, everyone should have respawned.

Trivia

 * The name of the achievement is a reference to the South Park episode: The New Terrance and Phillip Movie Trailer, which includes a television show called Fightin' Around the World with Russell Crowe. The show features a belligerent Russell Crowe with an overstated Australian accent, travelling the world and picking fights with innocent people, a joke about the actor's numerous violent episodes in real life.