To make it more easier to hit the head. The level is should be raised up to around the crosshair, but not lower than that like it’s currently does.
Or make it around 30-50 dgree of diagonal swing that starts from over the shoulder. It would be also make it eaiser to hit the head than “Horizontal swings that placed at lower than crosshair”.
And maybe increase its damage, too. About 1 hit kill the clan rat with the body shot in the cataclysm.