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