First off, I'd love to see this in the game. The concept art looks fantastic but the execution is a bit off! The sculpt seems a little rough, especially the horns.The textures don't look crisp enough or not similar enough to Valkyr's. Here's an image of what I'm talking about. It might just be me but, it also seems slightly too large(Maybe a 5-10% size reduction would be perfect).
https://image.prntscr.com/image/41VdDBs2T6m-9I9p-EuH6g.png
https://image.prntscr.com/image/uR5qX7EoSPGpVx42OLCUEg.png

With a little more work I would definately grab this!