failure to get achievement reward mcc/H5

gamer tag: Jacobwd2002
i was trying to get the halo 5 HelioSkrill Armor by completing all 4 campaigns (H1,H2,H3,H4) when i completed all of them i went to Halo 5 to see the armor and it wasn’t there so i went back to mcc and looked at campaigns it says i did all on legendary,but when i went to status report and it says i only did halo 2 and halo 3 ;-;
can you pls help me
ty an advance for your quick help
ps: i did it solo

All missions have to show completed on legendary here on Waypoint. If they don’t you have to go back and redo the missing ones. You have to complete each missing mission without stopping until the mission is complete. There is a bug in MCC, where it will not show the mission completed, if you stopped at any point and finished it later. That said 343 added​ Helioskrill to the req pool, so you will eventually get it in a gold pack. I earned the armor, by playing mcc solo as well. I had to go back and redo most of h2, but I didn’t mind, past halos are great.

ok i did do halo 1 (no stop) but it still says i never played it