The following is a content cut from Mental Omega APYR.
The Iron Fist is a scrapped unit that was supposed to appear in Mental Omega 3.0. This unit would later be replaced by the Syckle in Mental Omega 3.3.
The Soviets were not fully able to use the potential of their Iron Curtain technology, until the Iron Fist appeared. Its mobile iron curtain device will surely become useful in the final battle against Yuri's Epsilon.
Behind the scenes
In the preview video (see References), the Iron Fist is armed with flamethrowers. However, if the unit is spawned in Mental Omega 3.0 via editing, it is instead armed with "Fist" rockets instead.