I do like this, it sounds quite simple, but effective. the melodies are nice, as you said
my favourite part is 1:22 to 1:47, the piano is so uplifting and a great touch.
1:03: I like the little clip there
the fact that the song starts quite abruptly but the ending is very drawn out is interesting, giving a change in atmosphere.
The level you made with this is AWESOME too, which I beat this morning! so it seemed apropriate to review this today.