For those of you wondering about Dead Island Riptide’s new hub-defense mission type or the gameplay in general, IGN has released some exclusive gameplay footage.

The video lasts nine minutes, in which we’re shown around an area of the flooded island of Palanai and introduced to the new mission type known as hub-defense. Players must build up a defense back at base to counter the waves of undead outside. The footage has the player scavenge a downed helicopter for machine gun turrets, which he then brings back to base to use as a mounted gun.

Other defences include mines which you can place and fencing to temporarily keep zombies from entering the base. In order to travel around the island, you’ll also be introduced to boats, which are really useful for getting you and your scavenged parts around the island.

Check out the full footage below: