Hey James!
Assets and setting looks great. Overall for me the game was too silent (music/background/atmosphere). Did you think about implementing a counter for the Notes, because I dont know if I did find all of them. Visually its beautiful but I cannot even compare it to slender as there was nothing threatening me. The only thing lurking for me where the guys in the screenshot below.
(may I ask where you got the characters from?)
I wonder where you wanna go with it in the end. Spoiler:
i kind of got more jumped by that random weird bush in the middle of the street then anything else :c)
Without the jump scare right at the start i would not have been as scared of the nonexisting other jump scares. I was expecting things everywhere and nothin happend :c (luckily)
Please consider taking a look into your triggers because
1. sound in 2nd train
2. warehouse message (top left) and

keep getting triggered over and over!