Was Lord Krishna feared as a warrior in his era?

Was Lord Krishna feared as a warrior in his era? Yes. Lord Krishna was the most powerful warrior in all of Mahabharata. When Krishna was just a child, he killed Keshi and Arishta - “When the great-souled one was brought up as a child in a family of cowherds, he made the strength of his arms known to the three worlds. When he dwelt in the forests along the Yamuna, he killed the king of horses, who was like the wind in speed and Uchchaishrava’s equal in strength. There was a terrible danava in the form of a bull. He arose among the cows, like death. Though still a child, he killed him.” 2. Krishna killed Kamsa and his brother Sunama - “The immensely energetic Kamsa was protected by Jarasandha. But with his valour alone, Krishna killed him and his followers in battle. The brave Sunama, the king of Shurasena, was the leader of an entire akshouhini. The valiant one was the second brother of Kamsa, the king of Bhoja. With Baladeva as his second, Krishna, the slayer of enemies, spiritedly consumed him in a battle, with all his soldiers”. 3. Sri Krishna defeated Vidarbha and abducted Rukmini - “Alone on a chariot, he destroyed the kingdom of the king and abducted Rukmini of Bhoja. He obtained a resplendent and famous wife and she bore him the great-souled Roukmineya” 4. Krishna killed Narakasura - “Piercing with lances and striking with razors, he killed six thousand in Nirmochana. He killed Mura and he killed rakshasa warriors. Then the brave one entered Nirmochana. There, a great battle took place between the immensely strong one and the even stronger Vishnu. He was killed by Krishna and was robbed of his life. He was like a karnikara tree uprooted by the wind.” 5. Sri Krishna defeated pandyas, Kalingas and burned down Varanasi - “He killed Pandya by striking him on the chest. He vanquished the Kalingas in Dantakura. He burnt down the city of Varanasi, which remained for many years without a protector.” 6. Krishna killed Ekalavya - “He was challenged by Ekalavya, the king of Nishadha, who was thought to be invincible. But Krishna killed him and robbed him of his life, forcefully smashing him against a rock, like Jambha.” 7. Krishna conquered Gandhara - “Having defeated all of Nagnajit’s sons, he spiritedly churned Gandhara and forcibly freed Sudarshaniya, beloved of the gods, from bondage” 8. Krishna defeated Indra and uprooted Parijata tree - “When he stole the parijata flowers, he defeated Shachi’s consort himself.” 9. Krishna conquered numerous kingdoms - “He defeated in battle Anga, Vanga, Kalinga, Magadha, Andhaka, Kasi, Kosala, Vatsa, Garga, Karusha and Pundra. O Sanjaya! Avanti, the south, the mountains, Dasheraka, Kashmiraka, Ourasaka, Pishacha, Samandara, Kamboja, Vatadhana, Chola, Pandya, Trigarta, Malava and Darada were difficult to conquer. Ashvas, Shakas and Yavanas and their followers arrived from different direction. But Pundarikaksha vanquished them.” 10. Krishna defeated Varuna - “In earlier times, he penetrated the abode of makaras, inhabited by aquatic creatures. In the midst of the waters, he vanquished Varuna in battle.” 11. Krishna destroyed the city of Soubha and killed Shalva - “Soubha, the city of the daityas, was established in the sky. It was protected by Shalva and was invincible. Through his valour, Madhava brought it down into the ocean.” 12. Krishna defeated Shiva, Karthikeya and Banasura - “Shankara
and
Mahasena
will
be
revered
in
the
world
of
the
gods,
but they
will
be
engaged
in
ensuring
the
welfare
of
Bana.Though
they
will
exert
themselves
on
his
side,
I
will
defeat
the thousand-armed
Bana
and
win
back
my
 son
through
force.” 13. Krishna defeated Yama - “There took place a terrible encounter between them both. Thereupon having vanquished the fearful son of Vivasvan, the foremost of Purusha Acyuta obtained the child son of his preceptor. He then brought from Yama’s abode his preceptor’s son lost for a long time.”