The two is just got at 100% are playing with a full deck and making it rain. Iv done them in full multiple times but still not unlocked. I have reset the Xbox as well.
Bluesky - yours might be easily solved - you have to go faster then Xmph then finish the race. Doesn’t matter where you finish but just finish, should unlock then.
No, it isn’t that easy. I’ve done at least 3 races over the months since release at Le Mans old, with and without AI. And I finished all of them. In a Veyron, a Koenigsegg Agera/Regera (?) and another car I can’t remember.
The achievement hasn’t shown up, but is listed as 100% and locked and sometimes shown as the same on my xb1- homepage.