Mount & Blade: Warband

If, like me, you missed this achievement when conquering all of Calradia then it can be quickly obtained by starting a new game. You need to steal 3 cattle in one go, it isn't cumulative.

The key thing is to have your Looting skill at 1 (no higher or lower). This enables you to steal a maximum of 3 cattle from a village.

I chose the impoverished noble, squire and forced out of land/home for my new character's background (making sure no background points went into looting). All of my stat points went into Intelligence, 1 skill point in Looting and the remaining skill points in Pathfinding and Spotting. The Pathfinding and Spotting skills are important so that you are quicker on the world map and be able to spot enemies from further away so they can be avoided.

Choose any of the starter cities and defeat the bandit. The Merchant from that city will want you to do their quest, simply decline and then leave the city. Now travel from village to village alone (don't recruit anyone). In the village menu select 'Take hostile action' and then 'Steal Cattle'. With your Looting at 1 you will be notified you can steal a maximum of 3 cattle. Accept the option to steal and if you're very lucky, you will steal 3 cattle on your first attempt. If, like me, you weren't lucky first time just keep travelling to other villages and follow the same process until you loot 3 cattle in one go. I managed to steal 3 cattle at the seventh village I visited.

This is my first solution posted, so let me know if it needs improving in any way.

Okay so this one is kinda confusing. You have to steal exactly 3 cattle. This requires some luck. Start new game and star going from village to village stealing cattle. (take an action - steal cattle) Remember to be a 1 man party. Sooner or later the achievement should pop out.

Hope this manages to help, as I, myself was wondering why it didn't unlock for me and was confused.