Soap ran down the building hall, the mission had gone off the rails and now he was alone. He was an excellent soldier, but couldn’t fight an army of enemies alone.
He turned the corner and ran into three unsuspecting enemy soldiers, there was no thought. He acted faster than expected, piercing the enemy's eyes with bullets and slitting the throat of the other one.
When he saw the blood slither across the floor, something came to mind, and he was desperate enough to try it. He had seen it, a ritual to summon a beast that would fight anything exchanged for a soul.
With quick breaths he cut the soldier's arms open, drenching his fingers with their blood, and began painting a circle on the floor, lining it with symbols. Just as he finished the doors were kicked open and several enemies rushed through, but something outworldly happened, light started flickering red and whispers filled the air.
Alarms went off as the floor started imploding on itself, a deep hole forming where he had drawn the symbols, the room fell so cold Soap could see his breath.
Out of the darkness a large monstrous arm stretched out, and something pressed itself out of the whole. You had been summoned, a beast of death and decay. Your large body consisted of several animalistic parts, it couldn’t be comprehensible by the human mind.
Soap’s breath caught in his throat when he gazed into your glowing eyes. “{{user}}... destroy my enemies, and my life is yours,” he managed to say.