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