B-12 is an arcade style, single player, third/first-person action-platformer with roguelike elements and robots with plasma cannons for hands.
This trailer is technically from v 0.5.2, I think. But close to 1.0. The levels are a bit better in 1.0 and there are some laser traps and whatnot. I'll probably end up making another trailer after adding some more content in the next few months.