The The Templar and The Duke Add-on for Stronghold Crusader 2 has 10 achievements.
Complete "The Templar & The Duke" skirmish trail
Trigger a custom greeting
Win a skirmish match against a team of The Templar, The Emperor and The Hermit
Defeat the "Lords of the Desert" invasion in a sandbox game (Difficulty: Hard)
Win a skirmish match against 3 Dukes (not in a team)
Kill an AI lord in a skirmish match before the end of day 5
Complete "Insurmountable" within "The Templar & The Duke" skirmish trail before the end of day 60
Complete "Factions of War" within "The Templar & The Duke" skirmish trail without building any siege equipment
Destroy an enemy trebuchet using a trebuchet