Why pc and xbox one with separate achievements?

Not duplicate on halo infinite please, halo infinite need to be universal it s a objective fact.

What do you mean? They are separated if you have the two versions of the game: Halo wars ( 2009 ) and Halo wars: Definitive Edition ( 2016 I believe ).

you’re right, I checked better. I posted this post because on xbox app I saw duplicates of the game, but it’s just a glitch

For further clarification, Halo Wars: DE on Windows 10 and Xbox One share achievements. What you unlock on one platform is also unlocked on the other. I believe I unlocked the achievement for beating the first mission on my PC before swapping to my Xbox One, but it does not count the achievement twice.