I agree with Jason & Nathan about the length and redundancy of some of the similar styles. I found myself skipping through a lot of the tracks. I think, personally, they don't all need to start and end - you could cross-fade between tracks mid-flow and this might make the listening experience a little less laborious.
I think the orchestral style is where you shine so I'd suggest trying to get as diversity as you can within that. The more chirpy tracks at the end could have been placed between some of the quite dark and intense orchestral pieces towards the beginning of the showreel for more a immediate show of diversity.
Some feedback on Wolf Bane (track 4) - I was struck by how far right the drums were panned on this. I would consider centre'ing them as the panning seemed to weaken the effect of the drums and made everything sound a little imbalanced in my ears.
Those were my impressions! :~)