Some unanswered questions.

[senataur]

- Why does the Shadow leave Daniel alone in the 'revenge' ending?

Reposting here because i thinks it's relevant but...
I always took it that the 'red goo' was a consequence of whatever Alexander was up to in the castle.

The red goo could just be the result of the ritual Alexander was performing. In the 2 endings where the ritual is completed and the portal appears, the red goo takes over and kills anyone left over in the Castle.

In the ending where Daniel stops the ritual the red goo is also stopped.

Has anyone got any information that would counter my thinking? Is the shadow actually the red goo? I never made that connection.