This is a portion of Krishna’s life from the Bhagavata Purana, specifically from his adventures after he becomes the prince of Mathura. I always felt that people tend to focus more on his childhood stories in Brindavan or his helping the Pandavas during the battle of Kurukshetra.
Even though Krishna never really took up the mantle of a King, he was always making political alliances and destroying his enemies.
So from the top in clockwise order, Krishna killing Kamsa, Krishna tricking Muchukunda into burning Kalayavana, Krishna kidnapping Rukmini and shaming her brother Rukmi, Krishna battling Jambavan over the Syamantakamani and winning Jambavati, Krishna and Satyabhama fighting Narakasura, Krishna with Arjuna and Bheema fighting Jarasandha and lastly Krishna beheading Sisupala during Yudhistira’s Rajasuya yagna.