Questions in Fazbear Nights Trilogy

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Isn't Legacy mode the bonus mode where we play Fazbear Nights without cameras or doors ?
Will there be trophies for the Fazbear Nights 2 remaster like there were for Fazbear Nights 1?
Me again, in the room where Golden Freddy (Yellow Bear) is stored, there is a second door in front of him which, although I press E to open it, remains locked. Is it possible to unlock it via a second secret key or not ?
How do we get the trophies: "Painful Memories","Skill... Issue...?" and “What a Nightmare!” for Fazbear Nights 1 ?
in fazbear nights 1 the endoskeletons can't kill you if you touch them head on. Is it done on purpose?