I’m currently trying to unlock The Heleoskrill armor for Halo 5 beta, I’ve been trying to do all 4 games on Legendary since day 1 and I’m nearly finished. But when I check my service record on Waypoint, It thinks I’ve played -Yoink- all! It doesn’t know I’ve played further than Halo 1’s 2nd mission, it doesn’t think I’ve played beyond Halo 2’s mission “The Armory”, and in Halo 4, It doesn’t know I’ve played the campaign mission "Infinity"! What? Do you know how hard it was for me do do those on Legendary? & to have fear of risking my Heleoskrill armor not being in the beta? WHAT’S GOING ON?
You’re not going to have Helioskrill armor in the beta. Sorry. There is a huge glitch in the campaigns. You do not get the completion achievements if you save and quit then come back later. It’s very common. Your best bet is to wait for a patch to fix this (not unlikely) or try your hardest to beat every single level again in a -Yoink!- fueled Halo rage. The site says I didn’t do some of the levels I completed on legendary either so I completely understand your situation.
Easy fix while you wait for patch. If you use the campaign tab and do level selection, difficulty and skulls you just have to beat the level and save and quit after the next levels cutscene. Then just do the process all over again it works every time. Done with legendary play throughs finally. Just got done today!