Helck is definitely suffering.
On that suffering chart, He'd rank at and above 90% (Hell I think he's already at a fucking 110%) and deserves 0% of it. Guy just wanted peace for his brother, friends, and the rest of the humans.
Instead he witnesses his own brother killing himself to save him, watches every human turn into monsters, and watch as his first love succumbs to it as well.
Helck fucking suffered through so much shit, and he's forced to fight his brainwashed companions too.