Player choice and The End.

[grrrz]

edit: Almost forgot: The WAU err.. "human interaction devices" — they're comparable to the latern-things from Penumbra, right? Except the don't save the game, though they do clear up the blur/chromatic aberration. Was there some significance beyond this? Has anyone tried using them maximally/minimally? I began with the former but decided halfway through the was a bad idea; should've stuck to my guns, WAU be damned.

it's basically just a way to restore your health (and by doing so your movement and vision)

I liked the few choices you have (I probably missed some, since some killing seemed required at the beginning to go on). They do not affect the story because it supposed to be between you and your conscience, not a mechanism to unlock some aspect of the experience (like maybe dishonored, where not killing anybody render the game easier, and gives you the good ending. then you do it not because it's the right thing to do, but to get the good ending).
The most horryfing choice is of course the choice to kill the previous version of you. This is a very griping moment, and neither choice is a good one. you don't do it and 'you' wake up in a awful place with not a single glimpse of hope. you do it and effectively kill any single glimpse of hope.
and the ending reflects on this choice.
The human at the end was a nice twist. here it was really easier because she asked you to. there was no big moral dillemma (the fact she was maybe the last human, we couldn't really be sure, besides she would have died anyway, very probably).