I finally found the time and worked up the courage to play Amnesia. It was incredible. My play through lasted about 7 hours; it didn't seem that long. I think it could have easily been another hour or two longer and would not have all felt like it started to drag, but that's okay. The atmosphere was absolutely incredible and extremely tense. The story was fantastic from start to finish. The music, sound effects, graphics, everything was top notch.
I didn't save Agrippa though. I never found where to mix the ingredients.
I'll have to make sure I find it on my second play through.