Yeah the soundscape needs WAY more filling out. Big reverb effects, cool percussion SFX, choirs, some form of beat - orchestral or African percussion - something!! The key word here is atmosphere - set up a mood and fill out the sparceness, cuz otherwise, this comes off as bland and overly simplistic. Yes, there is minimalistic music - even piano solos at OCR, but they compensate that by having complex melodies and so forth; however this is, as Dannthr put it, simply plodding along.
Sorry if I came off harsh or whatever, but it's WAY better to listen to the workshop ppl than to have to deal with the judges when they finally get to your work. They can be equally blunt if not worse than here.