Could it be that the normals are simply inverted?
That's exactly what's happening. If you add the Unwrap UVW modifier, you can see that the texture coordinates are likely based on world coordinates, and the model doesn't have a properly configured texture grid, which is causing the problems.
To solve this, you need to assign a material to the model and configure the texture grid to match the original texture.
What texture should it be?
The model itself is located in the game files here: data/Arenas/Town/NewInferno/arc.xdb