You have a metal sword because you're not a Jedi. Swords do exist in the Star Wars universe.
Also use the space bar to pause the game so you can see what enemies are around, then click on one to target. Press space to unpause and start attacking. Your character should continue to attack, but just to make sure you gotta hit the attack button that hovers over the enemy you're targeting. You also use that to switch through various attacks and Force powers and stuff (by clicking the little up/down arrows).
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~Halo Live, fight, survive, as a family.
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