Here is the full list of all 80 Mount & Blade: Warband achievements. It takes around 150-200 hours to unlock all of the achievements on Windows.
Rule all of Calradia!
As a female character, become queen of all Calradia.
Get a character to elope.
Assist your faction in conquering Calradia.
As a ruler conquer 10 towns or castles.
Be chosen as marshall.
Kill 10 parties of Mountain Bandits.
You have completed the following achievements: Trick Shot, Khaaan!, Agile Warrior, and Harassing Horseman.
(MP) Kill 100 people with mounted projectiles.
(MP) Kill 50 foes with throwing axes.
You have completed the following achievements: Might makes Right, The Huscarl, Melee Master/Dexterous Dastard, and Holy Diver/Elite Warrior.
(MP) Win a round of deathmatch mode.
(MP) Win in Conquest mode.
(MP) Your team successfully defended a castle in siege battle mode.
You have completed the following achievements: Mace in yer Face!, Spoil the Charge, Agile Warrior, and This is our land.
Kill 75 enemies with throwing weapons.
Land a shot with a difficulty of 5 while using a throwing weapon.
Steal 3 cattle from a single village.
Put a pretender on their rightful throne.
As a female character, help a female claimant reclaim her throne.
Make your own faction.
Visit every major town in Calradia.
Get Married.
Pick a fight with a lord by insulting him or by challenging him to a duel.
Have two of the following skills at a 5; Looting, Inventory Management, Trade, or Prisoner Management.
Have a 7 in one of the following skills or a 5 in two; Tracking, Path-finding, or Spotting.
Get the engineering skill up to 5.
Get one of your healing skills to 5.
Get either two agility related skills to 5 or one to 7.
Raid 3 caravans and raid 3 villages.
As a female character, Capture and sell three NPC lords.
Win a battle against a lord or party who previously beat or captured you.
Have two of the following skills at a 5; Trainer, Tactics, Leadership, or Persuasion.
Kill 10 enemies with a throwing weapon's secondary function.
Learn 3 poems from tavern bards.
You and your army have killed or wounded 5,000 enemy troops.
As a ruler have 3 vassals.
Make one of your melee weapon skills 250.
Make one of your ranged weapon skills 250.
You have completed the following achievements: Abudant Feast, Mace in yer Face!, Sarranidian Nights, and Art of War/Melee Master.
You have completed the following achievements: Melee Master, Knights of the Round, Every breath you take, I dub thee/Good Samaritan.
Promote one of your followers into a position of power.
Become the owner of at least 5 fiefs.
As a female character, make your own faction.
Be granted your first fief.
Raise your soldiers' morale from low to excellent.
As a female character, give a companion character a great sword.
Kill 75 enemies with horse archery.
Land a shot with a difficulty of 10 while using a bow and arrow.
Amass a fortune of 100,000 denars.
Have a -50 relation with a lord, village, or faction.
Face off against 100 enemies using custom battle mode.
(MP) Kill 25 people with throwing weapons.
(MP) Kill 50 cavalry while on foot, the enemy must be killed while mounted.
(MP) Perform 25 lance kills while mounted.
Get either two strength related skills to 5 or one to 7.
You have completed the following achievements: Might Makes Right, Choppy Chop Chop, Glorious Mother Faction, and Old school Sniper.
Kill or wound at least 500 enemies.
Camp in the Sarranid region of the map.
Eat 6 different types food concurrently.
Defeat 10 enemy parties in the snowy regions of Calradia.
Land a shot with a difficulty of 6 while using a crossbow.
(MP) Kill 25 foes with a blunt weapon.
Enter and win a tournament.
Successfully defend a castle.
Finish reading one book through the camping screen.
Sell 5 people to the ransom broker.
(MP) Slay 50 foes with slashing weapons.
(MP) Win a round of team deathmatch mode.
Help a lord or party win a fight.
Recruit 6 hero characters.
(MP) In any multiplayer mode have more kills than deaths.
(MP) Win one round in battle mode.
Kill 50 men as a female character.
Harass wondering peasants on the map.
Cleanse the town of bandits in the opening mission.
Engage in a conversation with a hero character through the party screen.
As a female character get into a duel with male lord by insulting him.
As a female character, raise your renown to 50.
Install and play one mod.