A clear sign you know what you're doing as I found Shifter by far the easiest class to kill. I'd normally catch them off guard at least once with my one trick - entwine; callblood/berserk/cry; spam lash 'shifter name'.

The aim being when they revert to word (often very late in the fight), my lash would catch them vulnerable out of form and finish them.

I also I suspect I know another character you're currently playing, assuming you're still rocking deadly shifters, although I might be wrong.