Answer:
Some lines here are repeated from Book 16, and will be again in Book 19, showing that Achilles is still stuck in this mode. But his awareness also grows. Anger is addictive, as Achilles admits here, yet he still keeps cycling into it. Following this he begins to invest his anger into a vendetta against Hector.
During the literal tug-of-war over the corpse of Patroclus, while waiting for new armor, Achilles unleashes his war-cry, and goofiness results. Charioteers lose control and die, "impaled on their own spears" (18.266). Among the Trojans, Polydamas recommends a retreat, but Hector wants to continue the attack.
Step-by-step explanation: