HEMI is one of those levels, to me, that is better in the second half, once the drop hits, since everything from the pacing, to the design pick up heavily, everything feels and looks much more alive, that being said, the first half is still fantastic and a great build-up, albeit a bit slower, speaking about the second half, the effects here are really cool, transitions, animations, lighting, it's all there and melded together perfectly.
(video is mine)