Halo: Spartan Assault
28 Achievements
400
20-25h
Dynamic Duo
Earn all Gold stars in all co-op missions
30
How to unlock the Dynamic Duo achievement in Halo: Spartan Assault - Definitive Guide
We both purchased and equipped the ability on each level. If you do, you'll be getting Gold Medals without any problems. It's key to work together because you don't want to fail, because you'll have to waste more CR or XP to buy the "XP Booster" again.
If you're able to complete the 5 levels and obtain the Gold without dieing every time. You only need 250 CR or 5,000 XP altogether for the ability equipped on each level.
It's the most easiest method in my opinion.
I've tried to run through the levels without the booster and it's hard, even if your partner has the booster and you don't.
I hope you obtain the achievement and good luck.
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.