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