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