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