On lunch, so can't comment on arrangement right now. Production-wise:
-Starting off, things are pretty clear so far, sound-wise. It gets a little bit dull with for the first :50 or so, since it's almost exclusively low strings playing unison. This makes it soundlike it's just background soundtrack stuff, rather than the action itself . See if you can make it a bit more interesting.
-Still a lot of unison stuff at :50 with the addition of woodwinds. They feel a bit loud and exposed in context here, but not too bad. Still, I think the main problem is several unison elements all playing their parts.
-1:08 needs percussion underpinnings for sure IMO
-1:19 felt extremely awkward. The woodwinds are suddenly VERY loud and the drum transition is really weak.
-Really loud blatty trumpets at 1:25 with loud strings. I guess it was intentional (?), but you start the second half of the melody line a beat early (1:30 specifically), which you had to compensate for with the drum hat fill.
-1:36 egregiously loud woodwinds . They'd never carry over the rest of the orchestra like this. Push the flutes back and let the piccolo's naturally higher register carry over the rest of the sounds. You can support it with oboes if you need to bring out the melody further than flutes/picc can - plus it'll add a different timbre to it.
-The underpinning low string stabs are a bit robotic with same velocity quarter notes over and over. You've done a good job overall varying up velocities, it just needs to be carried over to this element as well.
-The drumkit in general isn't meshing completely with the orchestral elements, space-wise. Believe me, I totally understand how hard this is to do. Try and get a bit more spacious feel to the drums so they blend with the other elements better.
-2:04 much better drum fill
-Interesting idea with the harpsicord section. It's slightly on the rigid side as well, try to humanize if you can.
-Again, kind've uninteresting run with brass at 2:29 with just constant half-notes for a while in unison. Really could do a lot more to keep this stuff more exciting. Sounded like a couple wrong notes in there too between the instruments playing, can't tell for sure though.
-2:50, these hits desperately need some timpani rolls or cymbal rolls or something building to them . Just something I'd do (actually, I think I DID do that...)
-3:06 less unison, more harmony/counterpoint/something again, please
-3:26, the drumkit hits are really pumping or clipping the audio here. I think the levels overall are just too high to handles this. Happens again around 3:47 and beyond. Ending section from 3:59 on was a bit weak, honestly.
Overall, good samples (sounds like ewqlso and AD, am I right?), and good writing ideas. Beyond volume and balance issues, I think you have a lot of room to make this more intricate and interesting. There's an over reliance on unison sections and repetative phrasing has room for more style and interpretation.
Good luck and keep at it.