The Hunter

An agile Infected who can climb walls and jump over rooftops, similar to 28 Days Later Infected and Half-Life 2's Fast Zombie. If the Hunter crouches for a certain period of time, a meter will fill and it can use its most powerful attack (this was chosen instead of it becoming invisible once backed up to a wall or similar piece of cover, turning invisible, and then pouncing). It can then pounce on a survivor, pinning them down on the floor and slashing at them with its claws, rendering the victim powerless unless The Hunter is killed by gunfire or knocked off its victim. If the hunter is shoved off the pinned survivor it will not die instantly, rather just be shoved back and be stunned for a few seconds. It is extremely weak, and can only sustain minor gunfire before dying. The Hunter can also retreat, and slowly heal itself.

Tactics
Easily the coolest looking infected, this guy will whisper dark phrases to alert you of his presence. Try to keep in a group or at least have a buddy with you at all times. If knocked to the ground, do not scream profanities, a notice will tell your allies that you are getting mauled. To remove the Hunter, simply inject bullets or the butt of your gun directly into the agitation. Easy to kill but will kill stragglers if someone is without a buddy.