Monsters, mothers, dragons, oh my!

Our heroes plunge boldly into the poem that have been the inspiration for every video game ever made, what with the multiple levels (Heorot Hall, The Haunted Marsh, etc), each one ending in a big monster fight. 

They (spoiler) love the Seamus Heanny version, but find themselves in the unenviable position of doing bloody (but respectful, we hope) battle with the Douglas Wilson version.