Wow, I got it now) Guess I reached the true ending (level with a hook). Also found the text message, cool idea, I liked it.
The game is creepy, and it's interesting to discover new things when you restart.
The only thing I want to mention - I guess, it'd be better to have some (creepy) popup at the end of the first try, 'cause I really thought the was a crash and didn't even thought about restart. Or probably move restart into the game, to not make a player to launch exe for many times.
Overall, it was fun to play, good job!