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