Dynamic Duo

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Earn all Gold stars in all co-op missions

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First off, it is highly recommended that both players purchase Score Boosters in the pre-game lobby of each mission. The Gold Star requirements for the five Co-Op missions are very high, and without any boosters, it will be too difficult to achievement the Gold Star rating.

Although both players are awarded points separately based off their actions - their scores will be represented by a Blue or Red Spartan helmet on the bottom of the screen these points are then added together at the end of the mission for an overall score. Try to finish each level in a short amount of time for the added Time Bonus, and also, make sure to communicate effectively and use your grenades wisely in order to chain your kills together and score a lot of medals for an even bigger added bonus at the end. Some of the missions may need replaying, as the Gold Star requirements are very tough to get on your first run of the mission. Pay particular attention to the third and fifth mission, as these are the hardest Co-Op mission to achieve Gold Stars on.