I need to know the name of a video game?

I remember playing a game with robots in it. the robot you played as was kinda blocky lookin. not sleek like futuristic robots. almost junkyardy. your boss was a robot who smoked a cigarette. and you had guns and fought other robots. i remember the scenery. there are i think multi player levels or game modes where theres a robot or two hunting you down and you hafta fight for survival. the guns were like machine guns. and there are these two robots that appear randomly and sell you stuff they have a big boombox and are kinda gangstery with a new yorker accent. i miss this game A LOT and it would mean a lot if someone could tell me the what it is. ty!