Here is the full list of all 33 Stronghold 2: Steam Edition achievements.
Win a Skirmish or Multiplayer Game, Recruiting only Ranged Troops
Use Every Punishment Building in a Game
Win a Skirmish or Multiplayer Game, Recruiting only Melee Troops
Hold 100 Feasts
Recruit all Barracks troops in a game
Complete the Conquest Trail
Complete the Evil path
Recruit all Siege Equipment in a game
Attend 100 Jousting Tournaments
Complete the Good path
Your Lord Dies
Complete the Sim Campaign
Hold the Largest Feast Size
Accumulate 250 Royal Food in one game
The Lord Gets Married!
Build 50 staple food Farm Buildings in one game
Build 25 Royal Food Buildings in one game
Accumulate 10,000 Gold in one game
Accumulate 1,000 Granary Food in one game
Kill 50 Wolves in one game
Place at least one of every building type in the game
Recruit all Mercenary Camp troops in a game
Win 10 Skirmish Games vs. A.I.
Win 50 Skirmish Games vs. A.I.
Win 10 Multiplayer Games
Win 50 Multiplayer Games
Win a Skirmish or Multiplayer Game, Recruiting only Monks
Kill 10,000 Rats
Collect 1000 Gong
Attend 100 Plays
Consume 1,000 Ale in one game. (It's cleaner than the water)