Great looking game there.
Any chance you might post what kinds of stats or rules you used for the various weird stuff?
We played it on the hoof really, from what I recall the walker was treated as an armoured car/carrier, for its Tesla gun I used the template from the AEWII rules with all within it hit and just rolling for damage, the US robot troopers and German constructs did not need to take order tests.
All troops were given wound levels, each wound would take the place of pin markers for order tests and firing, the German Doktor figure was treated as a medic, but when in contact a D6 was thrown, 1 to 2 would inflict a further wound, 3 - 4 would remove a wound, 5 would remove two wounds whilst a 6 would make the recipient "impervious" this meant that it could throw a D6 when receiving further wounds and on a 4+ ignore them.
The US had a mechanic, which when in contact with the walker or a robot trooper it could remove a wound on a 4+, the US rocket troopers could ignore terrain and move at the run to simulate hopping over obstacles. To fire on a target you had to acquire it, for this we used the spotting table from "Battlegroup Kursk".
The German genetically modified ape could throw 5 dice in close combat and could take 6 wounds, if it rolled a FUBAR on a 1 or 2 it would panic, if a 3 to 6 it would go into a blind rage and attack the nearest unit/figure regardless if US or German.
Thats about it from what I can remember, I will try and note these down more formally for future games.