Armored Robots Core Shooting

Following the destruction of the machine-run society of Layered at the hands of a Raven,
mankind has slowly begun the process of returning to the surface and repopulating the face of the globe.
All is well with mankind, or so the corporations would lead you to believe;
however, despite disbelief of their assurances in the general populace, things truly are looking up for humanity.
Reconnaissance teams are sent out all over the world to search the land and determine what has changed,
and to seek areas to for the returning humanity to go. Everything so far seems to be explorable,
or at least reachable; everything, that is, except for one area that continually eludes scouting.
All attempts to investigate this region are met with complete loss of contact from the exploratory units, mostly at its border.
Anything that attempts to cross the line goes silent; thus this demarcation becomes known as the 'Silent Line.'
Given that mankind returned to a subterranean state after a global nuclear war, there is no known threat in this silent area.
However, everything that crosses into it never returns.
What is behind the Silent Lines? Why does everything that cross it go missing? As a Raven of Global Cortex,
you are sent to the Armored: Portable Silent Line to discover exactly what is behind it, and to find an answer to this enigma.
Be on your guard, Raven. Something sinister could be lying in wait...
During the course of the game, it is revealed that technology given to the Corporations has a suspicious quality --
it resembles that of the Controller and a satellite cannon discovered in space by reconnaissance technology from Mirage,
and the cannon itself appears to be autonomous. When Mirage attempts to infiltrate the satellite,
they accidentally set off an override mechanism;
a mysterious code is sent to all of the technology given to the Corporations by the AIO,
and a massive amount of their collective technology either goes haywire,
detonates on them, or attacks the Corporations' forces autonomously, causing catastrophic loss in resources for all of them.
This extreme blow to the Corporations causes them to launch a mass collaborative effort never before seen.
The Corporations as a whole send a group of Ravens to the satellite to disable the cannon,
which is now firing erratically all over the surface, though its attacks, while random, seem to be avoiding the area behind the Armored Core: Silent Line Portable.
Once the massive weapon is disabled, the Corporations seek the source of the override code; the emanation point is behind the Silents Line.
Let's go to the game Armored Robots Core Shooting.....