He was confronted by a massive wall of dark, bloodied, matted fur. Then he saw claws, sharp, brutal, red-stained. And when he looked up up up… there was a snarling, saliva-dripping, hungry-eyed monster- werewolf, his mind supplied, rather unhelpfully- looming over him.
He tried to figure out where his wand was, but then he realized that he'd dropped it when he'd fallen first in the tunnel, before Sirius dragged him up to that horrid room.
So, he did the only thing he could do anymore. He screamed.
In a way, everything seemed sorta peaceful. In that blissful I'm-really-going-to-die-this-time way. Even as the werewolf lunged forward and grabbed his arm hard enough that the claws ripped through his skin and muscle and sinew and scraped his bone, he was almost happy.
'At least I won't be tired anymore.' Nevertheless, despite his rather content thoughts about it all finally ending, when the werewolf latched his large mouth over his shoulder bit down hard, piercing through the skin all the way across half his chest and back, Severus screamed in terrible, blinding pain.
Deeper than just the agony of flesh being torn into and bones cracking- his right arm, that the werewolf still had in his vice-like grip- was a horrible, burning feeling, that seeped into his blood and raced through his body like infection. It rendered him unable to move or struggle, but it only served to increase the torment ten-fold.
And it didn't stop him from shrieking his pain.
Suddenly there was a flash of blinding light and the hulking form was gone. But Severus couldn't find it in himself to be glad, because the horrible feeling of burning up from the inside was still there.
He collapsed onto the ground, body spasming in uncontrollable pain. But he managed to stop his screaming, biting on his tongue til his mouth was flooded with the coppery tang of blood.
Screaming does no good, screaming only makes it worse, whether or not the agony was worse now than it was before.
Don't be seen, don't be heard, just fucking don't exist!
A strangled sob tore itself from his throat without his permission. Suddenly there were hands, pressing, shaking, helping, hurting.
He opened his eyes and abruptly wished he hadn't. Because through the watery sheen of his forcefully repressed tears, he could make out the concerned- what the fuck? Since when has he ever cared? Oh that's right, never- face of none other than James Potter.
What a cosmic joke. The last thing I'll ever see on this damned planet, and it's my arch-nemesis' face. What the fuck did I do to deserve this? And Severus let out a hysterical, barking laugh which was cut off by blood and a green, viscous fluid that erupted from his lungs in harsh, brutal coughs.
But he still refused to scream. And as his body writhed in unfathomable pain and his eyes rolled into the back of his head, and the darkness took over his mind and faded the world around him, all he could think was, 'Finally'.
And the last think he remembered was a voice- whose voice was that? Don't know… doesn't matter… so peaceful…- yelling out, "OH SHIT!"
And Severus was no longer aware… and he couldn't be happier.