Atrocious (adjective) ظالمانہ، سفاکانہ

horrifyingly wicked.
Example: “atrocious cruelties”
Unrepentant (adjective) بدکار، ضدی، غیر نادم

showing no regret for one’s wrongdoings.
Example: “he was unrepentant and said that his comments were completely accurate”