[X] Attempt to disable it mechanically (requires Procedure use).
The map of the target location exists within Henriette's mind, a three dimensional topological scale of the location. ADEIs are wonderful things.
"Fall back to grid ES 923 945," Henriette orders the daemon. "Lure it across the frozen-over dry lakebed. The ground there is frozen solid right now, but I'll bombard it and it'll turn to three metre deep slush, there's so much water in the soil."
"Watching an enemy drown on dry land. Wonderful," the daemon says with a disturbing note of glee in its voice.
Henriette looks up at Mari in her HUD. "Right. Get me the best locations for shot placement for this. I'm counting on you," she says as she begins to load the mole shells she'll need for this.
"You know, there are better solutions if you want to liquefy the ground," Mari observes. "You could just use a Thumper shell. Or nanodispersants. Or..."
"Thumpers sometimes damage railgun launch mechanisms, nanodispersants aren't stable on Earth and have undesired side effects," Henriette says quickly. "High explosive mole rounds with a timer set up for subterranean detonation will do just fine on the frozen soil. Especially when that tank is already glowing red hot from the plasma."
"Why don't you just hit them with a burning ball of napaltha thrown from a trebuchet?" Mari grouches. "It's so crude!"
"There are doctrines for the use of trebuchets against area where the fabric of spacetime has undergone an extreme breakdown due to the use of Deviant powers," Henriette says archly. "They've been in use since the early Order of Reason. Modern field trebuchet designs might be made from carbon composite, but they're basically the same. I got to make one once as a project when I was thirteen. It was great."
Mari frowns. "I... I remember that," she says, brown wrinkling. "None of the context, but... urgh! Stop doing the things I did! Or... bah!" Grumbling, she obeys, tongue sticking out slightly as she tries to find the perfect spots for the shells.
"Sorry you had to see that. With the VX," Henreitte says softly.
"What? Oh! It was only neurotoxin," Mari says casually. "Not even any of the funnier kinds. I wanted to use AJD nanoaggravants, but you all said no. Even if the way they twitch as they're converted back into primal energy is so aesthetically pleasing. The released nanospores look like fireflies!"
"It's not stable," Henriette says, in place of all of the many, many things she could say.
"Urgh. Earth tech. So stupid and primitive."
[Henriette, Mari - Matter 2 - Melt and Reform rote. Once the target's on the dry lakebed, the bombardment will make the thick mud under the snow turn to liquid until it resettles, and the tank will sink into metres of mud and be completely submersed. The liquid mud will also get in its radiators and its gears and its air filters and its barrel and generally prove to be a total nightmare when it reforms because machinery hates mud, and that's even if it can somehow get out of the fact that it's now underground. Enhanced by Int + Heavy Weapons]
(Hopefully it'll just be trapped there, clogged up with mud and inoperable, because that will make it salvageable.)