A matchup

'Crash!' 

The huge Mecha directly crashed into the wall backward. The wall of the room adjoining the hallway shattered like a piece of paper as Mecha rushed into the empty room. This much resistance was nothing in front of the rampaging steel monster.

But it didn't stop there. Like a crazed bull, the mecha continued its backward charge, as it continued to backpedal, making its back smash into walls of the rooms on the forty-fourth floor repeatedly, wrecking through them in the process. 

Until it finally stopped after blasting through the third wall and penetrating the fourth room…

"Hah! I think it should be enough. He will be finished by now."