help with animal crossing: wild word. (the model's textures are acting odd)

[Nooga]

Some of that almost looks like broken normals. IDK what version of Blender you're using, but I'd try going into edit mode, select all faces, recalculate normals and set from faces and see if that at least partially fixes it. If it does, I'd check over your model in edit mode with normal viewing on and manually flip any that are facing the wrong way, then select all and set from face again. It doesn't look like a UV problem to me because it looks fine in texture paint.

But mind you, I'm also no expert, so past it being an issue with normals, I genuinely have no idea. Hope it works out.