Overriding steamVR rotation,transform?

I want to make FPS like steamVR controller, I would like to take rotation of HMD, and then I would like to move forward direction relative to HMD. I know its possible, but Kinda lack of ideas how to acomplish that.
parent.transform.Translate(camera.transform.forward*1*timeDeltaTime), does not work correctly, since rotation of parent during these movments stays the same, it wont update
I also tryed to, Transform.Rotate() which will rotate steamVR controller Left/Right, however this rotation acts strage, Visualy Camera/controlers rotates 90% correctly however it looks like parent transform does not rotate at all, and applying transform.Translate will result in movment in wrong dirrections