I think the top right picture, where you can see the closeup of the grenade guys face, and the other guy shouting in the background, is really cool.
One minor point( I alway have something, eh?) for future work. The guy looking around the corner, I would have his eyes looking to his right a bit more, and not straight ahead. When there is something far enough out of our lateral vision that we have to turn our heads to see it, our eyes generally go in that direction as well.
Nice to see the update, looking forward to the grand finale.
Cheers
Jason