The zombies in Dead Island don't have a ton of hobbies. Mainly, they try to kill and/or consume to surviving people on the resort island. That's why sticking together is going to be important, as showcased in this new video.
Check out the footage below to see hordes of undead get burned, chopped, and shot by groups of survivors. In gameplay terms, this demonstrates how you'll be able to team up as a team of four to cooperatively fight your way through the hungry hordes.