This is a great game! I'm currently working on completing the endings.
What is the keycard for? It doesn't provide any bonus and it doesn't seem to affect anything.
Do you mean the ID card? It's mostly flavor for a specific ending ;)
Ah, I think I know what ending you're talking about. I didn't think the ID got a mention in that particular one, but I might've missed it.
Yee, there's no direct mention of it, only a vague hinting of it before the final confrontation
