X turns remaining? that means i have to keep track of the total turn limit, make a substraction and keep tracking of my current turn.

Wouldn´t be easier to simply state "Capture all objetives in X turns" o "capture all objetives before turn X"? This way i know exactly how many time i have to capture the objetives, now is quite easy to slip one or two turns if you are not aware of the remaining turns to achieve victory conditions.