"Too slow."
In a blink of an eye, Barry appeared in front of Chaos, two fists together over his head, and attempted to hammer Chaos. He missed, but the result that happened next was more shocking: Barry broke the floor and caused the whole room to shake. In the process, he also got his fists stuck into the ground.
Samuel sighed and walked over to Barry to assist him in removing his fists from the floor, while Remilia took out two long curved daggers.
"I don't want to hurt you, Chaos. Just get out of here."
Rex groaned. "What is this, Remilia? Don't hesitate." He pulled out two Magnums and fired both of them consecutively at Chaos. Samuel, who happened to finally get Barry's fist out of the floor, assisted Rex with his own two pistols.
Chaos barely managed to dodge the flurry of bullets, and failed to notice Barry's fist rocketing into his stomach, causing Chaos to fly into the wall and make a noticeable imprint.
Remilia winced, then turned towards the door while the others took Chaos out of the wall, tied him up, and gagged him. Barry then threw Chaos over his shoulder. Rex sighed and said, "Looks like this is gonna be a hot spot. Luckily, I got just the thing." Rex pulled out a detonator and pressed the button, causing large explosions to shake the building. The debris caused the whole room to be covered in various kinds of dust, and when the dust cleared, Remilia, Barry, Samuel, and Rex were gone, with their hostage.
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A/N: As you can see, Barry has superhuman strength. He typically fights with steel armor on his fists, but he was caught reasonably off-guard.
Remilia shared friendly history with Chaos in the past, which is why she didn't want to hurt him.