The five figures with gilded armour started with black undercoat then overbrushed with bronze ( Vallejo Bright Bronze).
After that, the figure was overbrushed with a highlight using Citadel Burnished Gold (or Vallejo Glorious Gold).
Them I washed the whole thing with Citadel Agrax Earthshade.
You have to redo the gold and wash a few times so that you get consistent bright highlights and deep shadows.
Sometimes, I mix a very bright silver with the gold to get an even brighter gold.
For metals, I like Citadel paints best and next I like Vallejo Game Colour. I use both interchangeably and mix them.