Heres where you failed...
Ok so the concept was good, only one chance to play the game. But you didnt warn anyone. I know what the title says but a popular game came out called lastman where you got one life to beat the game, if you didnt you started it all over. At the very least there should be a button to let you try again once you have seen the last scene (flowers and grass on grave and stone). What you effectively have done is made this a pile of shit. With only one chance to play, there is literally no replay value (as intended, I understand that) but with no replay value, who gives a shit? No one will recommend a game they can only play once, rather they might steal the use of their friends computer to play it out, thus when the friend tries to play it, he is denied his chance. For all of this I have given you a 0 because this just doesnt deserve to be here, its not wortht he effort. All your programming, while clever, makes this useless. A nice try though...