
Unbiasedness made one of the strongest warrior from Kauravas's side.
Ashwatthama was one of the strongest and dangerous warriors from the Kauravas who basically had no remorse or liking towards either side only towards the throne and Ashwatthama was still in his prime some of his feats include -
Wielded the Narayanastra: After Drona's death, Ashwatthama unleashed the Narayanastra, throwing the Pandava army into complete panic. Krishna instructed everyone to lay down their weapons, as resisting the astra only made it more powerful. Even Bhima had to be restrained from fighting it.
Matched Arjuna in celestial warfare: Ashwatthama repeatedly dueled Arjuna and was one of the few warriors capable of exchanging powerful divine astras with him.
Night raid on the Pandava camp: Ashwatthama infiltrated the Pandava camp at night and slew key warriors, including Dhrishtadyumna and the sons of Draupadi. Despite the attack taking place while they slept, it showcased his exceptional skill and ruthless efficiency.
Near-unmatched endurance and ferocity: Throughout the Kurukshetra War, Ashwatthama fought elite warriors such as Arjuna, Bhima, and Satyaki, surviving until the very end as one of the last great Kaurava heroes standing.