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