Why doesn't Hamlet show guilt after he kills Polonius?

has
just begun to express his feelings to his mother about her marriage and her intimate relations
with , which he considers disgusting, adulterous, incestuous, and wicked. It is impossible for
him to add any additional feelings to those which have already driven him half mad. His anger
frightens his mother so badly that she cries for help. Then , who is behind him and hidden
behind a tapestry, begins calling for help.is not only consumed with anger but confused. He
suspects that he has walked into a trap, because both his mother and Polonius are calling for
the guards. If the guards arrest him he will be put in a locked room, or possibly even into a
dungeon. He may lose his liberty forever, and be at the mercy of his enemy King Claudius. When
he kills Polonius it is impossible for him to add any more feelings to those he is already
experiencing, which include pent-up anger, disgust, hatred of Claudius, suspicion, fear of
arrest, and fear for his own life.

He...