Mark of the Assassin Achievement
Mark of the Assassin30
Defeated Duke Prosper, with or without Tallis.
Story related and can't be missed. You can make the battle easier by poisoning Leopold in the castle. To do this when you meet the cook in the sneaking part, send her away and add the following (watch the small counter that hovers the items carefully):
- Lutefisk x4
- Navet x5
- Old Cheese x3
Mix the 3 and put the potion in Leopold's rations nearby the table with the Navet. This poisons Leopold and makes him easier to defeat.