Very well made but I would also recommend making the legs as wither 2 or 4 separate pieces for animating it to walk with lua. After all this will be seen twice in the very beginning of the mod and one in the opposing force campaign.
Or better yet just make all 4 legs separate from the body as we can just make the 4 legs turn left and right to simulate walking and the body would be able to turn 360 degrees then.