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