I've only corrected grammar, word usage, and a few awkward phrases while keeping your style and sentence structure intact.
Rin narrowly ducked beneath the flaming claw before he retaliated with an upward slash. His blade scraped across the calamity's arm, sending sparks flying everywhere, but it barely left a wound.
The calamity let out a distorted laugh as it swiped at Rin once more.
Its attacks looked crude and lacked any real technique, but they were overwhelmingly powerful. Every swing carried enough force to crack the ground beneath its feet.
Rin quickly jumped backward before another claw slammed into the earth where he had been standing a moment ago.
The impact sent chunks of stone flying through the air.
"Tsk..."
He clicked his tongue before creating several ice spikes around himself. They shot toward the calamity from different angles, hoping to limit its movements.
Unfortunately, the creature simply released another burst of flames.
