Base coat the vest, the boots, the pockets and helmet ribbon with Leather Brown 1:2 Glaze Medium
Gloves, knee pad and helmet strip Chocolate Brown 1:1 Glaze Medium
Wash with Agrax Earthshade
For the guns, first highlight some parts of the gun (usually the bullet magazine) with Stone Wall Grey . After a water down Black (almost wash), 2 times, the second one the paint was still a little bit wet, trying to use the pushing of the paint to create some effect.
For the sun glasses Ultramarine Blue
Using a Glaze Medium 2x1 Buff mixture to paint the sandbags and do some highlights on the uniform. Followed by washing the sandbags and the wall with Agrax Earthshade
Sandbag Highlight with Buff and the wall with Stone Wall Grey
Using a Water 2x1 Black mixture and a old brush, painted the bases, trying to create a asphalt/sidewalk impression.