With the Blue Crystal in hand, you can now access the final mansion, the Rover Mansion.
- Locate the Hidden Path: From Flem, head down. You will come to a dead end with a body of water.
- Equip and Use the Blue Crystal: Stand at the edge of the water. Open your inventory, select the Blue Crystal, and use it.
- Reveal the Whirlpool: The Blue Crystal will cause a whirlpool to appear in the water. Jump into the whirlpool. This will transport you to the entrance of Rover Mansion.
- Inside Rover Mansion: This mansion is often considered the most difficult, with numerous strong enemies like Red Skeletons and more complex platforming. Navigate carefully, using your Sacred Flame and upgraded whip.
- Retrieve Dracula's Nail: At the end of Rover Mansion, destroy the Orb with your Oak Stake to reveal Dracula's Nail. Collect it.
You now have four of Dracula's body parts! Only one more remains before you can confront the Dark Lord himself.