Editing Hive Fleet Nidhoggr (section)

==Tactics==
The invasions of the Hive Fleet Nidhoggr unfold in a way dissimilar to those of other fleets. Prey worlds are first seeded through a shower of small meteors from which the first beings emerge and scout the crust for mineral deposits, hidden away from the world's inhabitants. Once the soil composition has been assessed, the true invasion begins; a psychic wave sent forth by the queen deploys the buried forces that emerge shattering the earth and catching the population off guard. Then, a shover of bigger meteors impacts the surface, targeting major cities and infrastructures to cut retaliation from the source; from these, the bulk of the invading forces emerge. Swarms of carnifexes ravage buildings and fortifications while artillery beasts like the Dactylis and Exocrine bombard the opposing forces. Sometimes airborne biomorphs are deployed from the orbiting mother ship camouflaged as a small moon; while they are not very much aligned with the style of the fleet, additional air support can prove very useful, especially against defenders that make great use of flyers of their own. Harridans spray a flammable goo across the battlefield, while the incendiary spore mines dropped by passing Harpies corner soldiers and cut off supply lines.
While the planet burns, the flames alimented also by the fumes emitted from the creatures' bodies plus other structures, its resources are harvested by the wyrms and other tunneling organisms, reducing the planet to a hollow rock drifting in space.

When reaching a system bountiful of materials, the scale of the assault can reach an interplanetary scale. The signal is broadcasted simultaneously and nearby planets are cut off from each other in the midst of the sudden chaos. This tactic not only serves to hamper resistance attempts but has also proved useful in conflicts with other Hive Fleets. With the aggressive nature of the Nidhoggr, it's not uncommon for it to fight over a planet with another splinter, or for their seeded planet to get invaded by another fleet before the later stages of the siege can begin. By cutting off sources of biomass, while at the same time claiming additional fuel, they can indulge in planetary wars of attrition with little risk of losing.

But the hive fleet's tactics are not without flaws. One weakness of the creatures from the Nidhoggr is paradoxically extremely low-temperature environments such as ice worlds. While their hide is extremely thermal-resistant, which helps them travel through space without worrying much about dispersing too much energy, the possible temperature whiplash can amplify the amount of fuel needed to function and can affect the carapace and skin making them more brittle. Because of this, worlds like those are preventively terraformed with large showers of debris that raise the temperature of the atmosphere enough for the effects to become less apparent or even dissipate. Fighting this fleet on such planets can indeed be advantageous, but the stress and desperation induced into the creatures to acquire the additional fuel needed can drive them to become even more aggressive and sporadic. Water worlds on the other hand don't pose much of a problem as the water can only be so much cold; still, tropical watery planets are preferred while colder ones are even more avoided than regular icy ones.

===Campaigns===
While scouring the galaxy for sustenance, the Hive Fleet Nidhoggr has crossed paths with many other races and fought various violent wars. These are some of the most notables:

*'''Barath's Fall:''' Being a mineral-rich planet covered in mining structures and filled with a vast array of natural gasses and precious metals, Barath was a paradise for the ever-hungry Nidhoggr fleet and a course so irresistible, its creatures would eventually give their all to consume it, resulting in one of the most devastating display of sheer brutality ever recorded by this fleet. The bountiful resources weren't only sought after by these terrible predators and the forces of the planet were not foreign to raids from bandits and even the occasional chaos attack, so much so that the planet was outfitted with miles of fortifications that housed both the millions of worker and the defending Astra Militarum regiment. From the very fist phases of the invasion, a very little number of meteors were able to strike the surface with most of them being annihilated by anti-air batteries and a line of thermally-charged cannons mounted on major fault lines from which they got their energy. The little forces that managed to land began their assault in the underground mines, where the narrow corridors provided an upper hand on the soldiers. Packs of Magma Corer eventually managed to disable some of the orbital cannons but by that point, the fight had already been taken to the sky, with imperial ships laying siege to the central hive ship shrouded in layers of rock and asteroid fields that were nearly enough to lighten the incoming barrages. With massive losses on the ground and facing annihilation in orbit, a final plan was devised; sacrificing part of its organic compartments to enemy fire, the mother ship quickly redirected the route near the planet's moon, and only when the pursuing imperial vessels were in range, another psychic call was broadcasted. In that instant, the swarms of Magma Corers that had been preventively been seeded in the celestial body for harvesting collectively detonated, shattering the moon like chalk on a board. The large pieces wiped out the enemy fleet and after some moments of silence bombarded the surface of the planet, flattening mountains and overturning the planet itself. Everything except for the best-hidden creatures was wiped out and the only things left were oceans of lava and charred skies. At the cost of a third of the planet's resources and almost half the Nidhoggr's fleet, Barath had fallen, and the Nidhoggr had risen once again from the flames.

*'''The Cindering of the Five Yhill:''' TBA

*'''The Siege of Meruno:''' While in the process of harnessing the resources of the planet of Meruno and its three moons, the creatures of the Leviathan hive fleet are suddenly attacked by a swarm of biomorphs from the Nidhoggr, determined to feed their flames at all cost. Showers of meteors impact the ground, dispersing the tides of gaunts and shattering hive nodes, while the rocky exoskeleton of the main mothership proves vital in resisting the retaliation of the enemy bioships. The conflict continues for weeks while both challengers try to take the upper hand; the first wave of fiery horrors proves effective at charging through enemy territory but as soon as synaptic link is re-established the resistance becomes much more brutal. At both ends of the conflict, a desperate rush begins to acquire biomass and materials to win the war of attrition, while the main front line shifts with constant motion. At last, having seeded the other planets of the system beforehand, the forces of the Nidhoggr manage to cut off the supply lines of biomass or burn it down before the Leviathan can convert it into additional forces. Slowly, the tide of war moves in the Nidhoggr's favor and after another month of cruel conflict, the last semblances of the enemy fleet are scrubbed away, cleansed in fire. With the gene pool of another Norn Queen acquired, the Molten Empress achieves a wide range of bio-data from previous encounters that it uses to further enhance her forces and even develop newer forms.