3. Why didn’t Achilles kill Agamemnon?

When Achilles strides toward Agamemnon to kill him. Hera sends the goddess Athenato stop him. Only Achilles can see Athena, who tells him not to kill the king. She promises that Achilles will be justly compensated for this great dishonor. Achilles obeys her, but he vows to Agamemnon that one day the Achaeans will come begging Achilles for help. They will need his protection fromHector, the greatest of the Trojan warriors, and Agamemnon will regret his pride.

Because, it wasnt in the script.