Dark Hallway
Master Chief slowly crept down the dark hallway, gun in hand. No noise except for the continuing sound of a liquid dripping from the ceiling to the floor in the distance. He examined every dark part, pointed his gun around every corner, just to be sure.
Something was out there. Something was lying in wait…
Master Chief came to an empty room, whereupon he shined into his rechargeable flashlight. He came to a toppled desk, and found a key card on the floor at the base. He picked it up and examined it, holding it close to his visor as he crouched. Suddenly a noise resounded coming from outside the room, in the hallway beyond. The Master Chief snapped upright and twirled in the direction of the sound.
He shone his flashlight into the doorway, but whatever had been there was gone. He sneaked onwards, making delicate steps, careful to not make a sound. He proceeded out of the room, and looked around, shining the flashlight every way. Confused, he let down his guard. The attack came from behind.
An Elite kicked the Master Chief from behind, knocking him off balance, then showered him in plasma. The Master Chief heard his shields whine and rolled out of the way. He stood up quickly and smashed the Elite in the jaw with his gun. It was disoriented, and the Master Chief took advantage of that. He dealt a blow to its chest with his elbow, then caved in its skull with his gun. The elite was kicked to the ground, still alive.
The Master Chief approached the whimpering elite lying on the floor. He pointed his gun at him and said, "see you in the pre-game lobby". Then he squeezed the trigger and let loose a barrage of bullets.