F1 2012
49 Achievements
40-50h
It Takes Two Baby
Win the Constructors' Championship in Co-op.
1.8%
How to unlock the It Takes Two Baby achievement in F1 2012 - Definitive Guide
All you have to do here is win the Constructors Championship in Co-Op. The fastest way you can do this is by making sure you achieve a 1-2 finish in every race. The trophy will pop once it's mathematically impossible to lose the Championship.
Co-op mode must be done over Xbox Live as Split Screen does not allow it.
For this, please reffer to This Thread for a Co-op partner.
You will either need to go through 2 carrer modes so both of you can get this and "Co-op Drivers' World Champion" or you can use the method discribed on the Roadmap by Maka below:
"Both players should trade wins back and forth to keep the points very close to each other. Now, on the last race, have the host quit out, and the other player will finish the race to get the achievement. Once this is done, invite the other player back in, and let the host finish the race in first, making sure to win by enough points to beat the other human player."