The earth beneath the guard's feet had turned into mud but was still as hard as stone. The mud encased him and propelled him towards Kelvin. He himself had become a human cannon. But to be honest, it was Kelvin that had copied his moves.
This was evident by the fact that the mud that had encased the man grew spikes. He was clearly a better human cannon than the temp that Kelvin had employed earlier. He was protected in armor, faster, and more dangerous.
He shot forward towards Kelvin to collide with him and smash him to pieces. Kelvin responded with a punch with his left hand. His left hand clashed with the human cannon, which resulted in an explosion of earth and flesh.
As usual, the man had led with his head. This turned out to be a bad matchup against someone with the ability to cause anything that he struck to explode.