I have one more question. Is there a way to disable no non-human beings? I accidentally enabled it and now i see i'm missing a lot of content
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Probably, it will depend on how far into the game you are. I am unsure if disabling it will fully enable things or not/ Early in the game, before the Seance there will be no problems.
It is disabled by preventing a flag changing and thus eventually enabling the events for Lilith and following content.
Open the cheat menu, locate 'Vampyre' (ie Lilith) and under 'Change Other/Extra' type 0 in the first edit box and 0 in the second and click the link. Before you do it the value under 'Other + Extra' should be '-1, 0, 0' after '0, 0, 0' (actually only the first number matters here, so if the others are not 0 it does not matter)
If you are later in the game, go and talk to Sarah and see if she looks out the window worried.
If you have done events with Elian I am unsure what will happen, her scenes may reset, I am not sure without checking the code more