Hello! 
How do I go about checking my time spent on Halo Wars?
Hmmm…
I don’t believe there’s a way to do that.
You can view game stats and the like at halowars.com. Completion progress can be viewed through xbox.com…and that’s all their is outside of the game itself, which certainly doesn’t dislpay that info.
If you stay on the main menu long enough it will scroll by on the bottom, usually takes 3 or 4 minutes for it to go by.
Got the achivement now. Thanks guys.