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