Indestructible Scene

The door slammed open. Every hand in the room picked up a gun, and upon realising the newcomer was not one of their own, they began firing.
Hundreds of shots poured into them. But they stood there, unmoving. Eventually the bullets ran out. Those who had extra clips began reloading. Those who didn’t watched in horror as their somehow untouched foe stepped forward. Their clothes were riddled with holes, especially around the heart, revealing smooth skin underneath. Not even a bruise.
The reloaded bullets clicked into place and the barrage started again. The monster before them went still again, as if the bullets were just an ocean wave they let crash over them. The bullets ran out once more, and once more they came closer. This time, only a few had any more reloading to do. The rest backed up in terror. There was only one way in, and one way out. It was supposed to be a bottleneck where any poor sap that wandered in would become Swiss cheese. But now the bottle was sealed with an indestructible cork. One brave soul grabbed a chair and swung it from the side while the monster was being shot at. It broke like it hit a concrete wall.
The bullets ran out again, the echo of their last hopes hitting the floor making some wet themselves.

“This is all too easy. Once you’re out of bullets, you’ve got nothing left. Now, I’d like to see your boss.”
The monster, in the shape of a mere boy, smirked and continued on.