The Entrance Hall, as the name suggests, is Castle Brennenburg's main entrance connected to the Old Archives. It is the third location visited and the first Hub level found in the game. Daniel must gain access to the Refinery in order to move further into the bowels of the castle.
The Shadow covers the main gate in its residue (yet again making it impossible to escape from the castle) and the path to the Refinery; but only partially. Once the player prepares the corrosive liquid, the organic matter can be dissolved, giving Daniel access to the Refinery. Oddly, the solution has no effect on the Shadow's residue on the gate. This is most likely because the residue covers a large area, and is quite thick unlike the Refinery entrance, which is only partially covered.
The Entrance Hall gives access to several other locations:
- Wine Cellar - Locked, the key is in the Archives.
- Refinery - Can only be accessed after getting rid of the residue.
The Entrance Hall is in a state of decay during the time location of the game. Some pillars and a staircase have collapsed, there's a hole in the ceiling and some doors are mysteriously boarded up, most likely by Alexander's servants who were reinforcing weaker structures that the Shadow threatened to collapse.
The Shadow gradually consumes this area as Daniel makes progress. This happens when he obtains the Wine Cellar key from the Archives, the ingredients in the Wine Cellar, and finally creates the acid in the Laboratory. The cosmic force roars angrily and the corridors leading to these three areas are engulfed in its fleshy matter, making it difficult to avoid injury.
This is also the very first place where the Player encounters the first flashback. The flashback is about Daniel and Alexander discussing the other parts of the castle such as the Refinery.
- When going up the stairs for the first time, Daniel will hear a female voice saying 'No! Get away from me!' and look immediately at the direction where the voice apparently came from. The voice is identical to the girl's voice whom Daniel stabbed to death in the Storage.
- When Daniel interacts with the entrance gate of the castle, he will lose some sanity as the door will be blocked by the Shadow's residue.
Amnesia The Dark Descent: Brennenburg Castle - Rainy Hall - Old Archives - Entrance Hall - Archives - Wine Cellar - Laboratory - Refinery - Cellar Archives - Archive Tunnels - Back Hall - Study - Guest Room - Storage - Machine Room - Elevator - Prison: Southern Block - Prison: Northern Block - Cistern Entrance - Cistern - Morgue - Control Room - Sewer - Nave - Cells - Choir Entrance - Choir - Main Hall - Transept - Chancel - Inner Sanctum - Orb Chamber