Tick Platform, pt. II:
Yup, well; he seems to be shooting at something else (preferrably another mech). And of course, whatever he's shooting at is still offscreen. Hey, I have to at least keep a certain amount of mystery or suspense to this; not too much revealed.... Works for Lost, right?
Here are some additional studies for the mech:
I'm thinking that the feet are designed to dig into the ground in conjunction with a discharge from the cannon, stabilizing it whenever it fires. Hence, the designation "tick" for this model. The arms are bowed so as to take the recoil of the gun at odd angles (Actually, it's for silhouette value, to make the arms read easier against the body; but hey, sounds fancier to have a physics excuse for the design).
PS CS, Toshiba Tecra M7 tablet PC. And the shooting of phantom bogies continues...