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