Grendel left the hills, bogs, and his hole, venturing to Herot. His only intention to kill people. The monster killed a man in many violent ways before he moved on to his next victim. Or so he thought the man would be his next to slaughter.
When he grabbed Beowulf, ready to tear him to shreds, he was seized by the man he had hoped would be his newest murder. Little did he know that this was someone who had vowed to kill him.
People jumped from their beds, ready to protect the prince from Grendel. However their swords weren't of any use. The beast's skin would not be penetrated, even by the sharpest blade.
He fell weak, and realized he could not fight any longer. Beowulf gripped his arm tight as the monster struggled, and his arm was torn from the socket. Skin, bone, and muscle ripped apart, and the savage escaped.
After ambling back to his den, Grendel collapsed to the ground, exhausted, strengthless, and armless. Although he had made it so far, his condition overtook his body, and he died.
The prince had saved the small town from the bloodthirsty Grendel, and nobody could say otherwise, as the monster's arm was hanging from the ceiling.