It feels like what I would want to see in game however the head feels a bit too big for that body and maybe it could use some asymmetry on the body to make it more interesting. Probably adding some material variation to it could help lift it up. Maybe if you morph it more it could look better, basically changing parts of the original excalibur's silhouette similar to how umbra and normal excalibur look apart but with greater care of course since it is going to be a tennogen skin, for example stretching all of his elbows to create an interesting shape overall similar to how loki prime looks but not as much as him of course. So far the painting/texturing does not feel like it is on-point with what his details look like and feels too noisy overall especially in the chest area, some colors stop where they should not and there is no shape to guide the painting properly, its also way too organic looking while the overall 3D Shape is not.
Overall it looks like a nice Concept.