The score could probably be debated, but on the other hand I am quickly coming to the belief that a game is either a 10: go fucking play it or a 1: don't bother. And One Chance falls into the latter category for sure.
It reminds me of way back when, when I reviewed Linger in Shadows, which was essentially an unfinished demo reel you had to pay to check out (genius marketing, that). When I bashed it as such, a bunch of my friends got pissed off, saying that I didn't get it and that the artistic value of the game outweighed the fact that it wasn't a game and didn't have any clear idea of what it was trying to say (like One Chance).
The moral of the story is: choose better friends. Oh, and read Zig's reviews.
My one complaint about this review is that you don't mention that people think slapping ambient emo music over something makes it deep.
Note to gamers: when someone shoots you in the face, they aren't "gay." They are "psychopathic."