And here is chapter two.
Hope you like it :)

Chapter 2

More and more Hellhounds huddled around their two victims, drew their circles closer and closer.

Castiel's eyes were rigid and a hint of fear spread through his body.

A feeling that he otherwise did not know, but these beasts were able to scare even an angel of the Lord.

He could see how the bloodstained fur raised in anticipation on their backs.

Razor-sharp claws leaving furrows in the ground, curved teeth in their mouths flashed pale in the light of the flickering neon lights over their heads and hot drool dripping onto the floor. Their eyes glittered ominously red, fixed the angel and the hunter and the muscles tensed under their fur, ready to dash forward and sink their teeth into their helpless prey to kill them and to drag their souls to hell.

The first person who screamed in pain was Dean when one of the hellhounds dashed forward and struck his teeth in one of his legs and dragged him away from the angel.

"D-Dean..."

It was only a whisper which left Castiel's lips and he was forced to watch helplessly as another hellhound ran up to Dean and struck his teeth in his arm.

Castiel wanted to get up and run to him, protect him from these beasts but his human vessel was injured, weakened, pulsated only so in pain.
But Dean's panicked screams made him forget everything and he forced himself up slowly until he stood on shaky legs.

He was about to run to his best friend, but he made just two steps until a weight pulled him to the ground again. Razor sharp claws struck in his back, right between his shoulder blades, made him cry out in pain and writhe in agony.

He tried to apply his last reserves of strength and tried to push the hellhound off of his back, but he couldn't.

"Dean...no..." he gasped as he had to watch as Dean was pressed brutally against the cold floor and one of the beasts positioned himself above him and open his mouth, ready to kill him.

And in this one moment Castiel felt his strength returned.

With a deep growl, he managed to manifest his wings and threw the hellhound off his back, but another beast was quick to help, wanted to bite his wings and the angel could just barely in time lean away of the monster's reach.

With a single blow of his mighty wing he hurled the beast across the room and he forced himself up again and ran over to Dean.

He raised his angel blade and stabbed the chest of the beast that was bent over Dean and a bloodcurdling yelp left the hellhound's throat as the blade pierced it's body and forced the monster to the ground.

The other hounds of hell now turned away from Dean and focused on the angel.

They tried to attack him, but Castiel defended himself as best he could.

But he could no longer endure it and moments later he was again face first on the ground as another beast forced him to the ground and sharp fangs were buried in one of his black wings.

The angel cried out, and the power of his scream let the lights burst over their heads and some windows shattered and not only that, but some of the hellhounds whined when the power of the angel's true voice literally pierced their ears.

Dean gritted his teeth and protected his ears as best he could with his hands.

"DEAN! CLOSE YOUR EYES!" The hunter heard his best friend yell before his eyes began to glow and later a bright light filled the hall and the young man quickly shut his eyes.

Nevertheless, even if he still protected his ears with his hands, he could hear the howling of the hellhounds around them and they howled in pain when they went up in flames and then...it was all over!

The light faded, the whine ceased and darkness and silence lay over the old hall.

When Dean dared to open his eyes again he could only helplessly watch as Castiel collapsed and remained motionless on the floor.

"C-Cas..."

Slowly he tried to sit up, but he didn't make it.

The wounds were deep and he lost blood way too fast.

Slowly the world grew dark before his eyes and his head slumped to the ground.

The last thing he saw, before the darkness reached out her icy hand after him, was the shadowy figure of a young man, stretching out his hand to him...