Lines 700-800

(700-710) Night falls over Heorot and the Geats wait for Grendel to attack. The guards had all fallen asleep except for Beowulf. Beowuld waited for Grendel.

Beowulf fighting Grendel

(711-720) Grendel arrives at Heorot and prepares to wreck havoc on the thanes inside. Grendel begins to hunt to destroy them.

(721-730) Grendel approaches Heorot and begins to grow even more enraged. He rips the doors open and begins to survey the inside.

(731-740) Grendel begins to imagine the great destruction he can can cause and he becomes filled with a sadistic glee. 
(741-750) Grendel devours the body of one of the men who had been waiting for him to arrive. He is vicious and cruel in the way that he rips him apart and eats him.
(751-760) Beowulf forces Grendel into a death grip that was more powerful than any other that had ever been seen. The demon began to struggle violently, but he could not break free. Grendel tried to escape from the grip so he could flee to his den, but he could not get himself out of Beowulf's grip.
(761-790) Beowulf and Grendel continue their fight as heard as they can, causing a great deal of commotion in the mead-hall.
(791-800) Beowulf's thanes begin to defend their leader. They circled Beowulf and did all they could to keep him safe.