The flood combat form screamed menacingly as it lunged forward, ripping itself out of the hard resin encasing and entrapment. A gaseous burst of yellow toxins erupted as another large corrupted creature sprinted forward, a howl on its mandibles and a large bone claw outstretched. Small bulging spores joined the legion of diseased monsters, their tentacles and small flowered limbs stretching out with the intention to consume and infect any creature that would be foolish enough to enter their maw.

"Pull back!" A human voice echoed through the chasm, slowly followed by the bombardment of bullets and rounds ripping through the soft exposed flesh of the combat forms; blowing them apart but not stopping any movement. The two USNC warriors fired heavily on the incoming corrupted forms without remorse or mercy, running up the large catacomb corridor and shooting behind themselves blindly.

Two large flood creatures rushed from the side, letting blood and muscle rip off and splatter the floor as they smashed straight into the left side of the blue Spartan IV; knocking him completely to the floor. One howled menacingly and sprinted forward; receiving a swift kick to the area that used to hold a skull and sending the flood form into the nearby wall. The second hung back a little, attempting to wait for the human to let his guard down but only receiving a volley of SMG rounds cut through its side and rip it apart.

"Get up" Robert called out to the fallen Mjonlir clad Spartan IV, firing another round of bullets into a collection of flood spores that exploded in puffs of green hazy smoke. The two warriors stood up together slowly, firing at the large torrent of flood forms; but now the corrupted creatures had not just followed them but had started to surround the USNC members.

One particularly massive pure flood form creeped around the front of the catacomb, absorbing the metallic rounds like an grizzly bear being harassed by ants; both limbs of the huge creature had been reinforced with a skeletal structure that had been patterned so the arms appeared almost 'scythe' like.

"What's the plan Spartan?" Robert spoke slowly, his voice almost gloomy and devoid of all hope as both warriors were completely surrounded by the corrupted flood combat forms and the one monolithic pure creature at the front. Gabriel spun around and unleashed two rounds into the skull of the large flood form, only managing to anger the creature as it stepped forward and prepared to smash its 'scythe' like paw down onto the humans.

Slowly a small sphere like object descended down into the tunnel, bouncing against the wall and landing directly under the massive pure flood form; it sniffed heavily and almost touched the grenade with its tentacled mandibles just as the explosion went off.

"Up!" Gabriel roared to the ODST as the large blast cut through the ranks of flood that had halted their progression up the catacombs. Gunfire was erupting out of the top of the tunnel, revealing the golden Spartan IV known as 'West' firing upon the flood with her MA5 assault rifle. Robert rushed up quickly and managed to erupt out of the dark chasm, letting a flood of dual sunlight enter his visor and blind him as he fell to the floor while listening to the gunfire of West covering them all.
"When's that evac coming!?" The female Spartan IV roared as she reloaded her weaponry and allowed the blue warrior to leave the catacomb with his life and purity still held.

Gabriel sank down and grabbed the M9 magnum, reloaded it and repeated fire on all menacing and corrupted creatures that attempted to rip themselves out of the hole as he spoke back deadpan, without any sense of hope, "There not coming, we need to find out own way out of here."
"Jesus Christ!" She roared in frustration as she continued to plough her ammunition into the never ending fleshy corpses of the flood; a large spore attempted to jump and attach itself to her but only popped violently on her golden energy shields.

"What the hell are we going to do?" Robert shouted out as he managed to drag himself up, grabbing the silenced SMG from his side and firing at the unstoppable pure flood form that was rampaging up the tunnel until finally it smashed into the side of the two Spartan's; attempting to rip through their shields and pierce their Mjonlir armour.
Gabriel attempted to rise and grab his magnum, but one large bony corrupted smashed heavily against his torso and held him down against the floor as the creature lowered the remains of its head and unleashed a torrent of brown liquid and flowered red tentacles.

"To the end" West spoke grimly, stabbing her knife into the flood's pure side and letting loss a stream of yellow pus, blood and destroyed muscles. Finally she looked over to the ODST and witnessed him becoming swarmed by flood spores, then again to the Blue Spartan IV's visor and nodded once. It seemed that history foretold their inevitable end, no one was coming and nothing could be done to save them all.

Meanwhile
"South! Where are you!?" The commanding Spartan IV screamed into his helmet microphone, after the initial assault on the forerunner control gate everything had really fallen into hell; for all he the golden warrior knew, every UNSC warrior on the entire shield world had been killed, leaving him alone with a task to do.

Two large Sangheili minors were firing heavily on North's position, their storm rifles ripping through the low atmosphere and slowly letting the plasma cut into the forerunner metal; surprisingly leaving it completed undamaged. As the Spartan IV rushed up and fired his DMR at the elites, managing to clip the Sangheili across the neck after its blue shields had been ruptured.
A squad of Unggoy deacons rushed him from the side, bombarding him with the blast of green plasma and the occasional whistle of pink needles. North growled as his shields were cut in half, leaving him partially vulnerable as he attempted to hide behind cover and return fire on the small but vicious grunts.

As the golden Spartan IV commander rushed to the forerunner barricade,
reloading his DMR and aiming down the sights; the final Sangheili minor walked up behind him slowly, every step deliberately quiet and well balanced. A slow rumble escaped out of his mandible encrusted mouth as he raised his storm rifle over the human's head slowly.

North shivered slightly as he fired at the grunts, almost as if a sixth sense had issued him a warning of something creeping up behind him; but as he attempted to spin around; a thunderous and violent crack issued through the back of his head and let him collapse on his own limbs like a puppet cut from his master. The Strom soldiers immediately ceased firing on the human, surrounding him slowly and looking down at the unconscious and vulnerable Spartan IV commander.