Turning to its fellows, the brute laughed raucously at the human it had just broken in two. It had been running for its life, probably from another kill-team. From the look of terror, presumably drones or hunters. At a motion from another brute in his team, the chieftain paused for a second, looking back. Glancing another shorter humanoid form dashing through cover, roughly where the other brutes had pointed, the chieftain turned and walked up to the ruins calmly, his squad in tow.
As he reached the ruined metal that was hiding the human, the brute bent it back with ease, revealing... One of his companions recoiled, exclaiming; "What in the Prophets' name is-"
But before he could complete the sentence, a massive, invisible form smashed through his squad from the flank, in almost perfect time to the grim leaping their leader. More grims followed, appearing from the surroundings, leaping, clawing, hacking and chewing through the squad, as the hunter-sized from of the grims' ally flickered in and out of visibility, the stark bone-like off-white of their skin contrasting the bright orange-yellow of their eyes. The brutes tried to fight back, spike carbine and gravity hammer smashing, cutting, ripping and tearing back at the grims, but they were slowly driven back by the sheer numbers. Forced back to the ruined shoreline, the chieftain cursed. "This was meant to be easy, just the rounding up and killing of humans, but now it seems it will cost our lies and the lives of our brothers! What are these damn abominations!?"
Though the massive form that had slain one of his squad had fallen to his own hammer, the smaller beasts kept coming. Two of his seven followers had fallen, and now they were backed up against the waves, with no path of retreat, the odds looked stacked against them.
Then, as ammo ran low, as the hammers started losing charge, as another of his squad was injured, if not killed, the horde started to thin. Thinking they now had the edge, the Brutes fought all the harder, but they failed all the same.
None of them had been watching the water. None of them were watching as the furies circled behind them. None of them watched as the kraken rose up out of the water and charged the shore, half beaching itself, allowing it to swallow three of them in a churning mass of teeth, and lash at the others with its bladed tentacles, slicing them all to pieces.
Slowly the grims came up to the eviscerated corpses and feasted, while the kraken clawed its way back into the sea, using the large and powerful portion of itself still under the sea to pull it back also.