Slowpoke! Trophy

This is only available at night time. Outside at night, you will see Howlers, these are zombies that will scream when they see you, attracting more zombies and starting a chase. There are 4 levels of chase and more powerful zombies will chase you at higher levels. Try to stay near a UV area when attempting this so as soon as you reach level 4 you can go inside the UV zone and lose the chase.