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