"The humies were a right propa git to throw hands wit, but dis is just a krumpin to far!" A large ork roared with glee as the dead beaky boi it had walked over grabbed it by it's leg and pushed it away.
Another larger orc roared and slammed a chain axe into the twisting and steaming chitin of Da Bug's who had been smashed apart before and with a roar the massive chain axe ripped blood and gore in a brutal sloppy mist as it's head was destroyed.
But then the limbs of the bug twitched before violently shooting forward to spear the ork through the chest in a half dozen places.
"Look at dos danger noodles haha!" Another ork cheered as the destroyed body of a Terminator armor-clad Astartes got back to its feet despite missing its head after a mechboy used a portal bubble gun to teleport the Astartes' head away from its body.
And from the terminator's heavily armored form came spikes of bone, and from the top where the astartes was missing his head formed a stream of dozens of tendrils that had blades at the end that violently swung through the air in all directions in a dozen meters.
Screams rang out as the orks that ran into krump the beaky boy that got back up for another go got slashed into pieces by those bladed tendrils.
Then a loud roar rang out as the terminator armor-clad Astartes's Las-Cannon also re-engaged with flesh escaping the dead Astartes form to surround the Las-Cannon to provide the heavy weapon with bio-energy made out of energy stores of the dead Astartes.
Then, over the battle cries of the Ork's Waagh's came a haunting whistle as the air became clogged with spores that made Ork and Tryannid alike begin coughing and retching before their unnatural bodies began somewhat dealing with the spore-filled air.
The battle kept going with the slaughtered humies, bugs, and even their boys would constantly keep coming back up for another go, which quickly began running down the numbers of orks that could fight.
Then the bodies of the humies and the others became... Weird to Da Boyz.
"Oi why all these humies keep getting up? And why they got dez nasty armsies with stickers at the end!" A large Ork roared at a Painboy as he smashed the twisted humie that had mantis-like blade arms grow from it's body, even with a football-sized hole have been blasted through it's chest previously.
The Painboy spat on the arisen humie before saying. "Musta bee those humie weirdboyz! Probably a bunch of them Chaos lads with the spikey bit's with their own weird boyz. Probs trying to get a bunch of them Chaos Gribbles to come ere!"
But then before the larger boy who was in charge of this group could respond his roar was choaked back on thick spores that filled it's lungs as another bug got back up from being krumped and stabbed it in it's leg with a purple liquid coated spike.
"Dis ain't no fun for a scrap! I krump da little bastards and dey just get- ufuf!" The boss gagged and failed to vomit up the spores that filled it's lungs with the pain boy who did had a breathing mask it stole from a beaky boy providing it some protection as it checked it's boss.
"Heh, stupid boss. Da air is filled with da bugies poison. You gottsa cover da mouth or you can't breath like you can't breath out in space without an open window haha!"
Then the painboy's chortles as it ripped out it's bosses teeth were silenced as from a large pile of corpses the form of a giant Hive Tyrant silently broke out of the pile of corpses with new mutations and cut the pain boy in half with it's bone-like swords that crackled with crimson lightning.
This situation played out thousands of times every few minutes across the planet as the Tyranid and Ork forces who weren't know for their pure intelligence couldn't react to the perverse reality that their dead, and the ones they had already slain were mutating and rising up even more dangerously to cut them down.
Sure the Hive Mind after it happened a few dozen times began splashing it's dead with acid to render the dead down to their base materials so even if the biomass was mostly destroyed. It would still be usable.
But that didn't matter. There was a massive issue for the Hive Mind... While their ground forces were a major force for the humans and astartes to deal with. The newly arrived naval forces of the Imperial Fists, and Ultra Marines were dealing great damage to the the Tyranid and Ork's own space craft.
And those spacecraft, and giant bioforms that went left dead in space, partly destroyed... They also 'awoke' back to life with Ork space hulks and chaotic smashed together ships going full speed into other ships.
Tyranid Hive Ships began shooting their bio-plasma into their countless neighbors, all the while, massive bladed tendrils of flesh lashed out to drag their fellow hive ships into maws made out of countless bones.
All the while... The screams ringing out from the Tyranids and Orks on those Space Hulks went unheard in the dead space's silence as their own ships were turned against one another slowly but surely.