A stealthy yet surprisingly amphibious tank, the Archelon boasts superior armor plating, highly resistant to standard tank cannon shells, allowing it to emerge mostly unscathed when facing hordes of enemy tanks.
The Archelon is a bane to infantry, especially Epsilon's, as its main weapon creates nanoclouds like that of the Huntresses' nanoid gun which heals Foehn infantry by generating healing clouds from anything that's left of the unfortunate enemy infantry devoured by nanites.
With access to the Epsilon's psychic illusion technology the antithesis of the Shadow Tank has been created by the Foehn scientists: a tank, cloaked that is extremely tough and difficult to break with standard weaponry and, to make things more troublesome for its opponents, amphibious. Contrary to the Shadow Tank, the Archelon's purpose is to withstand as much damage as possible when its location is revealed, not to run away.
With its nanoid cannon it devours enemy troops and uses the salvaged material to heal Foehn troops nearby, just like the Huntress does with her smaller-caliber weapon.