Very nice man, this is epic
I like the overall feel of this piece.
Especially I like the little bouncy synth that seems like it is typically used in a dance song, but you managed to mix it and put it into this more ambient song, giving it that complex feel and overall neat countermelody. (Talking about the synth first heard at like 0:53).
At 2:55 it really changed, for a minute I thought the song was gonna have a heavy bass kick and start pumpin the volume, but then the heroic type synth came in with the main theme, which I think should have faded out into that really cavelike feeling part right afterwords, it was a little abrubt as is =P, although the second time it doesn't feel as abrupt because of the high string synths.
I would of also liked to hear a filtered long snare on every other second beat of the measure or so, SIMILAR but not quite the same as the one from Hell Space...kinda hard for me the explain what I'm trying to get at.
Also I like alot of the cool ambient effects and sounds you have going on all the time that mostly aren't noticed, but just had that nice textured element to the song.
AH, I LOVE YOUR PIANO! I don't know what you use for your piano font, but it is awesome man.
Now I'm just picturing playing metroid...and hell yeah this goes right with it, feels very much so like im playing metroid, once again i love the synth at 2:22.
Although, I think an ambient pad or vague cymbal rolls would have helped you at that part once the "heroic" synth comes in.
Just not noticed that at like 3:25 you have one of those filtered snarey sounds I was talking about, although it almost sounds like a vox, cool =).
That is about all I can think of to say, great work man, tell me when your next one comes out if I don't notice it before you tell me, cause I'm going on vacation.
Keep it up,
~TheWisestMagi~