Quote Originally Posted by GradyWilson View Post
...Wandering again.... Have I unlocked the full castle at this point? Every drop of my map is covered, sans the tip of the Castle... ...Am I supposed to head up there and kill Richter? I hope its not over, loving the game too much...

Wasnt someone here a MEGA-fan of SOTN? ....One of the MODs, no? I HATE looking at those cheat guides, my eyes always dart-around and I end-up spoiling things for myself..
Grab the silverRing from meeting Maria in the Spiked Hallway, and get the Gold Ring from killing the Succubus in the fake Save room.
Wear both in the Clock Room to get an item to help progress.

Purposefully tried making it vague for you. enjoy.