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