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