I've been asleep since I last posted. It looks like you figured out how to open the vent in the room with the grinder.
There are 4 endings to achieve: venomous, decaying, damned and redemption. Of the 4, Redemption is the ending you want to achieve. The first 2 are dead ends (where you do not complete the game).
The current version of The White Chamber is v1.0 - The developers are planning on an "International" version with more game play. They are working on a non-adventure game at the moment, but should be starting on the International version soon after.