What if GDI and Nod failed to defeat CABAL during the Firestorm Crisis? With both organizations destroyed by CABAL, nothing was stopping the rogue AI from conquering the world, replacing humanity with cybernetics. The Forgotten, out of the way for much of the Firestorm Crisis, now find themselves being hunted down, conflicted between fortifying their sanctuaries and actively waging a guerrilla war for their own survival. The years of unchecked Tiberium growth would also eventually attract the Scrin, expecting Earth to be devoid of hostile life. Their ignorance would only end up thrusting them into the war between CABAL and the Forgotten mutants, a dangerous situation due to their unpreparedness but their desire for the Tiberium Ichor drives them to destroy anything that stands in their way. A new Tiberium War is about to begin between CABAL, the Forgotten, and the Scrin. Conquest, survival, addiction. For whom will you fight for?
Once a Relay Center has been established, Assault Tunnels can be periodically built between nearby friendly bases and distant outposts. This enables The Forgotten to transport their troops quickly and safely across the battlefield, being completely impervious to enemy fire so long as they remain within the tunnels. They can also be used offensively, with units seemingly attacking from where the enemy least expects and quickly retreating to them, forcing the enemy to play whac-a-mole with them. That being said, the tunnel entrances are hastily built and will not stand up to much incoming fire. If anyone fails to escape before the last entrance is demolished, they risk getting buried alive. Large units such as heavy artillery will also not fit inside them, forcing them to take a risky detour on the surface. Assault Tunnels can only be deployed within the vicinity of a Construction Yard and it's counterparts or a Command Post.
original shp by: Dark Elf, Sleipnir, DeeZire
I see the muties got their hands on some Abrams tanks ;v