When you keep attacking a Headless Horseman, it might fight back. A yellow exclamation mark will appear above it to warn you, as shown in the image below.


Look! The Headless Horseman just threw a skull at you.


Tap on the skull with your finger before it hits, or you’ll take damage!


Note: The Headless Horseman has a chance to retaliate with a skull ONLY when it's in the back.