Gatecrasher

A gatecrasher can install up to three armor upgrades (each with an item level no greater than the gatecrasher’s CR) into its heavily armored frame. It is treated as wearing heavy or powered armor for this purpose. Its armor upgrades cannot be damaged or removed unless the gatecrasher is destroyed and leaves intact physical remains.

A gatecrasher can use a two-handed weapon in one hand without taking a penalty, and, when wielding two such weapons, as a full action can attack with each weapon once (taking a –6 penalty to each attack roll and to the saving throw DCs of any special properties or critical hit effects the weapons have), even if either of the weapons has the unwieldy weapon special property. A gatecrasher can use any weapons designed for creatures within one size category of its size without penalty.