Kwi Chang‘s latest mecha has a unique cockpit configuration and an amazing number of missiles, in addition to the chin-mounted chain-gun:
As a side note, low-slung walker-type mecha seem to be more popular among Western builders (inspired by the iconic AT-ST or the MechWarrior games, perhaps), while Japanese builders tend toward the humanoid (most certainly inspired by Gundam and the like). Maybe I’m right, maybe I’m not. What do you think?