Kyoko strikes out at Maegara's barrel, aiming to damage it in some way before the cannon is allowed to fire. Its difficult to see the inside of the barrel, but Kyoko can hear a bit of a crack followed by the most satisfying voice line she's gotten yet.
Maegara: "Regulatory system damaged. Energy fluctuating."
Much as before, Tisiphone makes little effort to actually avoid the whip. Instead it follows after Grease as he corkscrews away. One of Tisiphone's spare blades, a straight one much like a broadsword, deflects the first spin, but the Fury can't bring itself to guard against them all.
However, this wouldn't stop Tisiphone from completing her mission, simply three more strikes to go.
By now Tisiphone would be approaching the sound barrier as she continues. Though Grease's spinning makes it practically impossible for her to aim for any specific part of his body.
First strike comes from the axe-shaped blade on Tisiphone's lower left arm, aiming a slash across Grease's face
Tisiphone: "Gouge forth, thine eyes!"
the fifth blow is actually interrupted by Grease's spin ripping off the broadsword-shaped blade, leaving Tisiphone to simply hit him with her arm rather than make the theoretically imposing slash.
Tisiphone: "Sever Fifth, thine Neck!"
However, it seemed nothing would stop the final. Tisiphone thrusts forward with the long, rapier-like blade from the start aiming to impale Grease upon it.
Tisiphone: "Pierce Sixth, thine heart!"
now finished, Tisiphone would be able to analyze its own condition, its outer armor is absolutely shredded, with large swaths of wire and machinery poking out from it and sparking. Its now missing two arms. and one of the slashes seems to have struck a large, spherical core within the device, which now leaks a red fluid.
Tisiphone: "Se... VERe, da..MA.ge, de....tect...ed...."
The somewhat damaged Alecto doesn't seem to notice Artemisia's whip at first, and once it does Alecto simply takes the effort to grab the whip with its spare arm, and drag Artemisia forward. However, though it would give Alecto the chance to strike the persona, it wouldn't stop said persona from freezing one, if not both arms, restricting Alecto's ability to avoid and making the staff more brittle.
Alecto: "Tisiphone's signal weakening. Massive Mana surge detected. Calculating..."
Seeming to realize what's happening, Alecto looks up at Nanoha's bright, pretty light before giving her final command.
Alecto: "Critical damage inevitable. Initiating Ekdikisi protocol. Good bye."
As Nanoha's blast nears, the generator in Alecto's staff begins to overcharge, before bursting in one final explosion. the blast destroys both Alecto and their staff, as well as leveling a 10 foot radius around them. Fortunately no one was too terribly close to Alecto, with at most Mitsuru being near the edge of the blast radius.
The same could not be said of Grease, who was both near Tisiphone and potentially impaled, Tisiphone would discharge the last of the energy leaking from her core in a suicidal burst. What's left of Tisiphone's armor is utterly disintegrated and, were Grease caught, he likely would be too. Of course, death didn't really matter here, but it would boot him out of the simulation with much of the associated pain.
With both of the other Furies defeated, Maegara stands tall and alone, its charge seems to pause as it looms over the battlefield
Maegara: "I am Maegara the Indignant. Ye who would challenge the Furies, behold true wrath and meet thy destruction."
Rather than firing, Maegara simply waits, drawing in more energy from the core, as well as the environment as it continues charging well beyond safe capacity.
Maegara: "Commencing overload protocol. Final detonation in 3...."