Here is the full list of all 30 Vlad the Impaler achievements.
Get all of the weapons for the Explorer
Get all the achievements
Kill Vlad with the Primal Dirk
Kill Vlad with the Pole-Arm of Menace
Get all of the weapons for the Soldier
Kill Vlad with the Dagger of Perpetual Stone
Kill Vlad with the Two handed Axe of the Oaken-Heart
Have a skeleton give you a prophecy
Get all of the weapons for the Mage
Defeat Vlad as the Sorceror
Kill Vlad with the The Bloodspark
Defeat Vlad as the Priest
Kill Vlad with the White-Out
Defeat Vlad as the Knight
Defeat Vlad as the Assassin
Defeat Vlad as the Emissary
Taunt Vlad
Reach maximum good morality
Defeat Vlad as the Spy
Convince Vlad to stop
Kill Vlad's Wife
Recieve a mysterious silver stake
Die to Vlad
Enchant your weapon
Get to Vlad's Castle
Learn how traitors are treated in Istanbul
Reach maximum evil morality
Get the arm of the King of the Catacombs
Complete a quest in under 10 seconds
Put the Red Harem out of their misery