The texture work doesn't really help highlight the forms well. It's just mostly black with oil slick over it. Even if that was the color scheme it's missing the usual wear like exposed metal and areas of different roughness.I'd like to see the model without the textures.
Hi! Surface looks somewhat glowy and the shading shows some gradients. Could be the material and/or texture setup (normal map: correct handedness?, correct texture type?, sampled correctly?). Does it look differently in Painter? Should look into this, as it overshadows the presentation.