Flatten Everything

"Sigh, poor recruit Qin Fen. For his right arm to recover from the bone fracture in the shortest time, he had to try his best to reduce the vibration from the recoil of the gun body on his body by choosing not to withstand the stock[1] of the gun." The voice of the commentator carried a slight disappointment. 

"All the recruits, please keep your weapons and enter your hidden state." The referee's shout was heard in the earpiece of all the recruits, "We are now initiating the countdown. The battle begins in ten seconds. If any contestants have their weapons out and seek their opponent before the countdown ends, he will be considered cheating and will be disqualified." 

"Ten... nine... eight… three... two... one!"

Three recruits moved their counterattack radar immediately toward the direction they scanned previously, in which they expect their opponents to appear. 

Boom!