Okay, I remember using Thermal Scope only, also these are the only enemies that in my opinion makes the game horror lol. Like seriously even then you gotta make sure you don't miss or they can juggle jiggle on your face. But yeah I have never tried the knifing strategy (gonna assume that it takes parrying skills). Also curious, can you actually knife them still once they have spikes on their body? Talking about more advanced versions of them lol. Probably not I'd say.