As what we've been taught by GS-sama, you must kill those pesky gawbleens with fire. If they're still breathing even after you killed them. Kill them again. Make sure they stay dead. Dead.
Monster Mash.
One Punch, Man!
So he got 2-3 chapters out of this. Nice.
Oh, that "... To be expected of ..." I think it's the author's favorite line. You folks noticed that? I think he used it 4-5 times already. Just saying. 😉