Creepy crawler/doc

• Creepy crawlers are zombies that love the night, but they prefer to scream and draw in other zeds when they see you.
• No longer causes guilt, as it hardly looks like a child with its blackened skin and huge eyes.
• Has a shriek attack, which makes a lot of noise. Combined with their night vision, this makes them pretty dangerous at night.
• Added in 0.D (Danny).