Imagine a Tony Hawk game with crazy guns on a Horde Mode-style map. Insomniac Games did more than imagine. They built something very much like it for Sunset Overdrive's Chaos Squad multiplayer. Looks crazy enjoyable.
The trailer above offers the first details about the online co-op component, which you can jump into straight from single-player via special points in the open world. The trap-setting and strategic planning appear to be similar as in other games where there's base defense. But the speed and movement style look like they might make Chaos Squad stand apart from other multiplayer offerings.