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