The main goal for a hunter is to take down the team of four survivors that will be scattering themselves around a level. The first thing they need to do is use typewriters to unlock a switch. Luckily, important areas like typewriters are highlighted on your screen, so keep checking areas like those to find survivors. So the first goal is to stop them from using those typewriters, by taking them out or scaring them away. You will of course be able to see survivors running around, so keep an eye out.