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