:O
That's awesome.
Only one thing I don't like, the head, on the sides, where it dents in.
It looks too smooth, put some bolts or something in it.
It doesn't match the rest of the robot.
Overall 10/10
Edit: I can see you already have some bolts there. Make them a little bigger, they're not very easy to see.
I love it so far. Maybe try to make the circular base joints seem less rigid? So far I can tell you want to imply that the joints rotate, but the current joint structure isn't convincing enough.
Update