Late-game Town Enhancement.

So, has a way appeared to defeat an Orc with a Chaos Dampener or a Dwarf in a very long late game?

Why prolong the tech game into a long late game? You can always take Darkness and the Orc with its Chaos Dampener will end up in the discard pile. Besides, you can assemble a decent set of artifacts and develop faster than the Orc by 2-3 times.