Fast actions are fast.

Because you didn't reapply after Hyper said he was officially opening the RtD.

Pilot
Name: Combat AI 0.9b Artillery Edition
Age: 4 to 5 years.
Physical Description:The AI has no physical description, only that it IS the mecha.
Back story:

Long before the collapse that destroyed civilization as we know it, this Mecha was under construction at a hidden facility in the Nevada Desert. The AI was being "trained" at the time, and was not yet ready for use. The AI and its mecha was long forgotten since the disaster, until some explorers went to close to the base and activated its automatic defences, bringing the AI Online. With the defences at the base online, the AI went to help defend, finding that the world has long since collapsed, as shown by the lack of any personnel in the facility, explaining why it was not trained for years.

Wandering across the wastes for months, until it finally got mercenary work as a big gun. A very big gun. The only way for this mecha to change its weaponry is to return to a installation with the equipment to remove its primary, and only weapon. As it stands, it will be hard to find said installations, as most have been looted after fierce fighting with their defences.

Mecha
Name: Combat Chassis : Artillery/Long Range Edition.
Height/Weight: 16 Meters tall, 80 Tons
Physical Description: Arachnoid in shape, with a large rail gun spinally mounted. Various symbols on the body work, some from organizations that no longer exist, for example, the US army. Battle scars on the surface of the frame, but nothing extensive. Speakers in some areas, mostly for breaking morale of enemy infantry, and for communicating with the mecha's contractor. A small round hatch that leads into the main body contains a small, tracked robot, equipped with primitive arms, and remote radio controls to be controlled by the AI. It features a primitive on board weapon, the equivalent of a sub machine gun.
Classification: Heavy
Combat Role: Artillery
Primary Weapon: Spinal mounted Rail gun Extra Large.
Secondary Weapon: No Secondary, just amped up primary.

Abilities:
Arachnoid : Easily handles rough terrain ( I Guess this would remove rough terrain effects?)
EMP Shielding : The mech and all its systems are shielded from EMP attack. (Makes Sense)

SuperWeapon: Ejected Hydrogen Fuel Cell. The Mech only has one, ejecting one activates the backup power generator.

I just compiled all the actions for you, what a great way for being grateful.