Modding Destiny

We all know achievements in Destiny are shared between X1 and X360, if you unlock an achievement in of those it will unlock on the other the next time you use it. But so far ive only noticed this on cumulative achievements. My question is, if i unlock the achievement like doing the Raid without any of my squad dying, because for the love of me we cant do that, will it unlock in the X1 system?

Yes that is correct. If you use the achievement unlocker to unlock that achievement on the 360, it will unlock on the xbox one as well. But I wouldnt do that as destiny is an online only game and it is an online acquired achievement.

I am going to close this thread now to prevent repetitive answer.