MIND

Look top right to the game's banner. 921081.

YET AGAIN

Just before the game crashed, the text "thisismyfault" would pop up. You had to up your brightness for this one.

END

At the top of "the answer.txt", "elwFmc-hu_4" is written. This is a link to a youtube video, having you require to remove the words after "?v=" and then add it. The link leads to A Fangame Set Before the Events of Changed? | Changed: ADHOC (Prototype) by Neco The Sergal (this is a old game of ours)

You had to watch the video or atleast skip to the part where he inputs a code. The code leads to the pool room, which is another clue left in "the answer.txt" - 2409.