I used Mr Finishing Surfacer Black 1500 as a primer then Tamiya Nato Green, Black, and Brown for the camo. All thinned by Tamiya lacquer thinner retarder type.
I varnished it with Tamiya clear gloss (thinned with Tamiya acrylic thinner) for the decals then I varnished it Ak interactive ultra matte varnish. Then i apply the enamels and pigments.
I sprayed it with Tamiya XF-93 light brown diluted with water (a lot of water 1:10 paint to water i think) then i removed the excess with Vallejo airbrush thinner to make a sandy muddy look.