[MASSIVE SPOILER THREAD] The end

[Fomzo]

All of your summaries are good, and get into one conclusion: Daniel had a weak mind overwhelmed by common human instincts.

[Ghostflame]

Yeah that fourth ending is identical to letting Alexander pass through the portal, just.. yeah. He also says the same stuff after you die.

[Fomzo]

I can't imagine ending the game without entering The Inner Sanctum. But when I got there i was disappointed, 'cause I thought it got to be bigger...