I'm not a very classy guy, but this should be in an adventure videogame.
The structure is very nice, as it goes on adding more things, goes from gloomy to hopeful, specially when strings starts blending in, one of my favourite parts. Also the placing of the instruments is really good, I don't know much about stereo field and those things tho.
After the climax there's some saturated voice-like sound at 1:30, can't tell if it was made on purpose but it's not very pleasant hearing that when it's supposed to be the calm part. Same thing with the very last violin note, a bit loud...
If you recorded some of the instruments live with mic, hence the possible saturation, then props to you man. I don't even have talent to play some piano scores live and record it into my DAW.