I pumped this out rather quickly and messily so sorry for any grammatical errors it is definitely not my best work
Tower-Breaker looked out across the sea, his ironmasks and nearly the whole of his warband encamped behind him with a rare smile on his face. He had been told a great foe would meet him at sunset in bloody battle, that it would be a foe his match in strength and that if he could slay it he would be truly unmatched among all the world.
"Jarl are you sure that this prediction was accurate?" One of his Ironmasks asked.
He snorted "Do you have so little patience that you cannot wait for a mere 5 more minutes?"
The Ironmask shook his head "No. I simply doubt the word of one old seer"
He shrugged "Well if he was who I thought he was he would not make such a false prediction"
"And if he wasn't?"
Tower-Breaker shrugged again "I'll kill him"
After all no sane Norseman would imitate the All-Father and expect to escape retribution.
They waited and watched the sunset until the last dregs of sunlight began to dip beneath the waves.
The Steelfather sighed and turned to his ironmask "Well. Looks like you were right, now time to start trac-"
He was interrupted by his Ironmask. "Jarl… I think the seer was being truthful."
He turned and saw the creature as it rose from the sea to eclipse the setting sun.
It was almost 50ft tall with gray, leathery skin topped with cooled magma and obsidian-like crags some almost 10ft long, it's body was somewhere between an upright bear and a crude mockery of a man, in a gap between two obsidian-like horns was a single red, glowing eye.
As his eyes met it's baleful gaze, he felt a smile grow across his face.
Then it opened it's jagged mouth and roared, the eruption of sound struck his camp like a physical blow, thralls and tents alike sent flying through the air, most of his warriors were caught off guard by the sound and staggered back as they reached for their weapons.
The noise continued for ten deafening seconds all the while the creature approached closer its enormous strides devouring the space between it and his camp 500ft, 400ft, 300ft.
Tower-Breaker decided that enough was enough, and with a shout almost loud enough to be heard over the roar drew his sword, taken from the shattered body of a Knight on same day he had earned his Kenning and shot towards the beast on the back of a great boulder almost as large as the beast itself.
The thing's eye turned to him as it raised it's arms to brace itself for the blow, the rock crashed into it like a knight on horseback, it's knees bent, pushing it down into the ocean and for just a moment the Steelfather thought it would fall over backwards.
Then the boulder shattered shrapnel pinging ineffectively off his body and ruining his shirt, then he was upon the beast, his sword flashed iron flying from it's edge as a pale gold light extended from it cutting a horizontal line across the creature's face and gouging deep into it's eye, the beast growled, never slowing its advance its eye flashed a bright red and fired a blast at him.
As the beam of heat and force sped towards him he took a moment to revel in his own indestructibility, then the beam struck him, without a place to plant his feet he was sent flying into the ground.
As he absentmindedly tried to remember which direction would move him closer to the surface he heard booming footsteps, the Beast had reached land.
In an explosion of pyroclastic ash, magma, and flying rubble Tower-Breaker destroyed the small hill above him looking on as his warband finally engaged the creature, he saw a young man in fine armor with a short spear shouting a battle cry as he leapt towards the creature and passed some invisible boundary before he burst into flames his body disintegrating in seconds, this happened again and again as the beast continued its slow advance, then an arrow of lightning struck it in the shoulder and Eric God-Taunter drew back his humungous bow a second time and unleashed another arrow.
Then the Ironmasks engaged staying well outside of its range of its internal combustion peppering it with a attacks, it responded with enormous plumes of flame that stretched a hundred feet long lighting up the night with blue and orange fire, it was extending its hand to release another wave of flames when it was reminded that Steelfathers are in fact invincible and that they have little fear of coming out the worse when ramming into almost anything.
The impact sent its head snapping backward with a sonic boom and a resounding crack the Steelfather barely slowing before he unleashed a burst of deep cuts into the monster's throat black blood coating his blade as he pushed his sword in deeper still, even as it melted in his hands.
It shook itself its body crackling with lightning in a fruitless attempt to escape from the man imbedded in its throat even as great waves of fire spread across the battlefield forming walls of smoke and flames.
And then the creature roared a second time and Tower-Breaker was sent flying by the expanding shockwave of ash and sound and by the time he dispersed the ash clouding the sky he let out a cry of rage, for the creature was gone.
With his warband devastated he swore vengeance against the thing that had burned his camp to the ground listing its myriad wrongs in many a rant but he never discovered its greatest damage, later in secret men whispered that the encounter had cursed all who came near him spreading sickness and death, and for the most part they were right, for what does one call radiation poisoning but a curse?