What exactly do you mean? You want to know what remains to be done on UGVs/2x2 units, or what remains to be done until the game ins finished? If you meant the former, Duke and I intend to update the TODO for this, will probably have to discuss it first. If you meant the latter, there is no clear answer I can give you, only "a lot of everything". If you want to help, I suggest you take a look at the sticky thread.