Spartan mod for Half-Life 2

A shadow is looming over Greece. The Persians have already taken Thessaly, Argos and Delphi. More of Central Greece is preparing to surrender every day.
Under King Leonidas, an army of 5000 picked Hoplites prepares to march out and hold the Persian advance long enough to give the rest of Greece a chance. The Persians, however, are aware of his actions. The Spartans are the most feared soldiers in Greece, if not the world. The Persian Immortals will not risk an open battle, and instead approach the Spartan camp under the cover of darkness.
As Hippeis to Leonidas, you must protect the King's life with your own, if he falls, Greece is lost.
Live the legend of the Spartans.

The game will be largely based on melee fighting. The player will have a wide selection of [historically accurate] weapons. There will also be horses integrated into the game. Each weapon will have an attack based on their style. The Hoplon will be equippable, in accordance with Spartan values, with most weapons. For example, the spear will have the primary lunge attack, and the secondary Phalanx defense. When used properly, the phalanx can be devastating, although it should not be used without the cover of an ally on each side. In-game, the player will have the opportunity to interact with a wide range of NPC's, and a huge emphasis will be placed on encouraging you to fight in the Spartan way.