"so his ghastly dam struck back." Beowulf didn't understand the reason for Grendel's mom's attack. He took it for face value that she was just as evil as her son, but in reality she only wanted her sons arm back and wyrgyld. Had she been a man, what happened might've been acceptable.

"He had been poorly regarded by the Geats for a long time." Beowulf apparently wasn't liked for some reason. There was possibly something dishonorable he had done such as being greedy. This might be a foreshadow of things to come. maybe he wont be liked in the future as a king.

"that drove him into rage." The dragon was peaceful and only slept, but here when someone takes his treasure he gets mad. This says maybe the dragon isn't God coming for punishment for the death of Grendel and his mother. The dragon is just a signal of when it's Beowulf's time to die. It could be a symbol of death. It was doing nothing until It became time for Beowulf to die.

"After many trials, he ws destined to face the end of his days.." Beowulf knew he was going to die, but he didn't want his death to be of old age while he was on the throne. He wanted an honorable death. Perhaps a flaw or maybe not.

"He had scant regard for the dragoon as a threat,...." Beowulf was ready to die. He had lived a long life and done many great things. Beowulf was happy with his life. He was ready to pass on the throne.