Ok so I decided that after sitting in a box for a few mounths I wanted to play a
40k campaghn so I thought up this really easy way to paint the tiles
first prime grey
then a complete wash of grimstone syphia make sure to cover the tiles in it
after drybrush codex grey and fortess grey on the rocks
for simple rock works great
but for other tiles such as
lava
or...
get creative this is just to get you started when mine is all finished I will get a pic up