.fbx and .blend have flipped normals in unity Cannot export from blender to unity. On first image you can see imported .fbx and .obj(.obj works good).
Scale in blender is positive and normals facing outside.
I tried export .fbx with flipped normals from blender, but with flipped normals lightning in unity works wrong.
It looks like .obj and meshes is totally ok, but while importing with my armature it goes wrong. So i checked my armature and scale by X axis was -1, and right after importing good looking .obj was affected by negative scaled armature and normals gone wild. In blender, i applied scale to armature by selecting armature and pressing Ctrl+A a then Scale, same as people said in other threads about messing .obj Shame on me, i need to be more careful