Incognito mode works, thanks, though it would be nice if there was a way to revisit it in-game.
Reading over the final note, it leaves a lot of things unclear for me...
(Spoilers)
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His plan wasn't to remove all traces of the case ("I know I ought to wipe the drive, but I'm sorry.").
He didn't intend/expect to stop the curse from taking him, even by suicide ("I guess none of you will remember me!").
He didn't seem to have been specifically planning/expecting to die, since he reacts with shock/realization and as if his fate only just dawned on him, rather than having thought it through before ("I guess this is what everyone was expecting.").
And since it didn't seem like he'd have time to create the hangman game after already being doomed, it must have been created earlier. So I would conclude that it wasn't meant to imply a specific plan or known outcome. But then what was it meant as?
He also seemed to think that the case will/should remain a total mystery ("I suppose I'm the only one who knows what happened, and that information will likely die with me."), but if the only danger is in remembering specific people, what would be the harm in describing what happened and the nature of the curse, just without identifying the people? But the fact that he leaves the audio transcriptions with everyone's names mentioned throughout leaves a real danger.
And I don't get what he means by "I see this as the best possible outcome. And I'm honoured to have played my part." What part did he play, exactly? If no one ends up discovering his work, as seemed to be his expectation, how is it any different than if he had done nothing at all? And leaving the case files behind means he didn't even do "his part" of eliminating the danger.
The last three lines are ambiguous, too ("Write something important before you drop dead, you idiot! Never mind. God I hope this works"). Does the "never mind" imply that he gave up on trying to write something important, or did he suddenly come up with a plan to avoid death? Does the last line refer to this plan, and if so, what could it be? If not, what might he have been referring to? Maybe it was the "instructions" mentioned in the Brief ("we were given strict instructions as to when it could be examined. They also detailed a list of names prohibited from ever learning its contents, myself included.")?
And the last thing I don't get is that in the case of every other victim, no memory of them or their actions remained whatsoever. But in his case, the fact that everyone still remembers that there was a man hired to work on the case doesn't fit the pattern. Only his name seems to have been forgotten. Is it because they had records left behind of his involvement that they accepted to be true despite not remembering them, or did he actually avoid the curse somehow after all, or maybe just partially?
Lots to think about.