Phantasmagoria
Solution to fireplace-brickwall puzzle
Adrianne has to examine bird figurine closely and rotate it for a while. A trigger on the neck of the figurine becomes visible. She has to press it and attack that obnoxious wall with resulting letter opener. She might destroy that antique item in the process but it shall grant her freedom of movement.

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Parts of this guide
One guide by Veikko Danilas, in 11 parts. They read in order, and the part you are on is marked.