In order to get to get this Achievement you are going to need a few costumes.
- Thomas Jefferson
- Wizard
- Pharaoh
You cannot get this Achievement by simply going to the area the Wolfman is located you must have the Wizard costume equipped and follow the signs.
The quest is located in the Sewers where the claw marks are and you need the Wizards special costume ability to locate the clues to lead you to the Wolfman.