I really like your track, super atmospheric!
I do agree with some of the other comments on the repetition and lack of the nostalgic feeling described in level 2. While listening I found myself waiting for a point where the more muddy background sound effects would maybe quiet down a bit and take a backseat to allow room for a larger and more clear melody/progression.
Overall though, the track totally matches the style it set out for, and would certainly be effective for a credits scene in that style.