Well I prefer the original, that goes without saying, this version is not too bad, but sadly, the fact that there is only one guitar line at a time is abit poor, I don't ear a bass either. And The guitar is off rythm at 1:00.
The rythm should have been changed to a faster pace or at least giving a better and more energetic (at least fitting) drum line, I also noticed that there are attrocious contrasts from a part to another, just from the intro to the following is too contrastful, the Original soundtrack to Shadow of the Collossus is very clean and swift, meanwhile your cover feels much slower than the original due to its lack of true rythm track since a drum is not enough ...
I believe this can be much better.