This sounds like a really good to me. I haven't heard the rest of the collection, but on its own, the spikiness of the piano (love it when you can hear the hammer strikes) on top of the other music, sounds like an amazing film cue, for something like a dark thriller. I can see ice, snow and a lone man in that context. I wouldn't change the length, it resolves perfectly and gets the message across regardless of how you intended it. Enjoyed it immensley, wouldnt change a thing.
Bibs