First off this war lasted for 12 years.
Second off, Particles is not the younger cousin or nephew of Achilles, he is an older man and Achilles best friend.
Third, Hector does not slay Menelaus after Paris is beaten by him. Helen reunites with him and the Gods send them to a remote Island where Menelaus is blind and there is no one to admire Helens beauty for the rest of her life.
Fourth, Achilles does not take Perseus as his captive he takes a slave girl from another village.
Fifth, Hector does not slay Ajax. Hector is severely injured by Ajax early in the first year of the war and does not recover for 5 years.
Sixth, Paris is poisoned by his wife and does not live to shoot the arrow into Achilles heal, The God Apollo disguised as Paris shoots the arrow, remember Achilles cannot be killed by a mortal man and he did piss Apollo off when he cut off the statues head.
Seventh, The Gods are very much in the middle of the entire battle.