Doesn't sound like a horror track, instead sounds like a player just made a discovery of some abandoned underwater town (bioshock?). It doesn't sound like a track that plays after a scare because of the relatively fast rhythm and minor synth, but instead like an event track.
I love ambient music; this reminds me of vaguely of some of Biosphere's tracks (though instead it's based off of one of my favorite video game series ever, which means I have to love it by default).
Anyway, very nice. Liked, will sub etc. I encourage you to make more Frictional-inspired things!