Two-sided geometry so this helmet can be presented from different angles.
Creased edges in low poly mesh for subdivisions in Blender
Provided textures can have metallic look in Unity 5 with right material and lightning settings.
Pictures above were rendered in Blender Cycles with uffizi probe HDR image for environment lightning.
- 9 diffuse textures for bronze metal 4k - 1 diffuse texture for scratched bronze metal 1k - 4 diffuse textures for grey metal 1k - 2 diffuse textures for grey metal 4k - 2 diffuse textures for effect shown above in Blender Cycles - AO map - UV layaot for photoshop/ gimp painting