This song is utterly spectacular. And the fact that you made it in only two (rather stressful) weeks? A miracle! I once spent six months (on and off) working on a track that holds no light to this.
Making a song like this is truly ambitious, and I think it's fabulous that you just leaped forward and did it anyway. The vocals were hauntingly beautiful and the instrumental was spine-tingling on its own. I can't imagine how awesome this would have turned out had you been able to spend more time on it.
The only problem I can see isn't in your mixing per se, but your vocal processing. The instruments were produced very well, but the vocals didn't seem to fit quite right in the mix. I'm sure you could have made this better if you weren't literally working on borrowed time. It's easy to look past this small flaw, however.
I adore non-English vocals, so I was instantly emotionally enamored, and when I read the English translation I nearly cried. Beautifully done! One question, though: are you planning on tweaking this some more now that you don't have to worry about a deadline?
Downloaded for sure, I can tell that you poured your heart and soul into this.