I'm about to embark on coding the animation stuff; but first I needed a nice animation to test it out with, so here it is. Originally I was animating the arms too, but it seems to look more (or less, perhaps?) natural this way; it's a robot, after all :D
I expect that adding animations to the game will take a couple of days, but once it's done my crappy texturing the sky is the limit for the graphics in this game!
You were right, not animating the arms definitely gives the character a robot feel!