My first mecha! Not too happy with the colour scheme (blue, black, grey and bley) - but I don't have that many bricks yet, so not a lot to choose from. I'm quite happy with the way it turned out. Ball joint hinges at ankle, hips, waist and shoulder; brink hinges on knees and click hinges at elbows. The wrists are a 1x2 modified plate into the base of a headlight brick.
I like the head a lot. Very unusual. I've also found click hinges to work poorly at this scale, so I've switched to other techniques. I pretty much use clickers just as a way to put pieces at 15° off from another piece now.