So here's the truth, I am slowly learning UnReal so I have big respect that you did this in 48 hours. Big congratulations there! That said, I pushed E but didn't get the 3 until I read these comments, watched the vid. This seems like a good exercise for developing your UE skills and am a little jealous :O)
If you ever want an artist to collaborate with, I would love to! I've got zbrush and adobe skills I could contribute!