The Shrieker Zombie can use a Sonic Boom like attack, which makes it harder for the Player to see. Killing a Shrieker Zombie while blinded by it will give you an Achievement/Trophy: Blinded By The Fright, it is worth 30 GamerPoints.
- The Shrieker Zombie can run faster than any other Zombie.
- The Shrieker Zombie, along with the Napalm Zombie, are the replacements for the Boss of each map.
- Killing a Shrieker Zombie with a headshot causes all Zombie around to hold their head in pain, then die.
- When a Shrieker Zombie Spawns, it screeches, whether a player is around or not.
- Also, when a Shrieker Zombie Spawns, your Player may say something like "Did you hear something?"
- A shrieker zombie is somewhat like a banshee who screams ear-bursting sound and is undead