Got it…it worked! I can confirm the mission replay worked to fix the bugged mission completion. Guess that means mission replay should work for anyone…though the save was a post-winter update save (I didnt use my original one).
2 Likes
I unlocked it back in March and don’t recall having an issue with it showing done after completion
1 Like
Good for you man!
I guess my save file is bugged 
1 Like
do we have access to the thank gun with mission replay?
When you say you used a “post update save” what do you mean by this? I only have my original save file which can load and continue anytime as i cannot copy my original file to a new slot and conitnue post winter update. I can only continue with my original file and continue with the winter update, is this what you mean?
Almost certain all my missions say completed. Although i noticed some levels have all 4 difficulty labels ( easy, normal, heroic, legendary) indicated on each map (under where it says completed), but some are “white” and others “blue”, what are the differences? Those “white” legendary mean completed on legendary with no skulls and/or the “blue” legendary mean completed with all skulls active? Or vice versa, etc? Hope this all makes sense.
I’ve been watching the achievement percentage % since the start of May and its been stuck at 0.13% from May to November.
Even after the winter update, the achievement percentage is still the same. Its never once increased to .014% which means there’s only a handful of people (maybe max 11 people) who have managed to unlock the achievement or no one has unlocked it since April 2022 except maybe a few developers/testers.
This achievement should be made retroactive or as long as you beat the final mission with all skulls, we should be awarded the achievement. It is incredibly difficult to beat let alone do it several times. Please take responsibility and either make it retro and delete it and/or replace it with beat the campaign on legendary with any skulls activated or something similar. We want to enjoy your game and having achievements pop is an acconplishment for us so please fix. Its been my only achievement left since May 2022. Ive spent over 200 hours on Halo Infinite. The least you could do is let me have a 100% completetion on my achievement list to satisfy my OCD brain. Thank you.
3 Likes
March was before Season 2 (May) which is when the achievement stopped unlocking for people.
1 Like
Where you in a co-op game at the time? When I was with a friend who had only completed missions on Normal I would see all of the missions with Easy and Normal showing white and Heroic and Legendary showing Blue until I Mission Replayed everything with them (with all Skulls) and everything updated to being White difficulty indicators. Still no Headmaster achievement for either of us though. 
It also does this on additional save files that have been played on lower difficulties.
2 Likes
Just completed it on PC, the achievement still didn’t pop. Absolute BS that this achievement is still glitched since the beginning of Season 2. Some people say that you can go through and unlock it on mission replay, but no. I have completed it, and I shouldn’t have to go through all the BS again because the achievement is glitched. Quite appalling this hasn’t been fixed.
3 Likes
I just finished my LASO run and I didn’t get the headmaster achievement. I looked back on my mission completion and the game seemed to think I didn’t complete “The Sequence” mission. I tried replaying it but it once again, did not work.
3 Likes
don’t bother, i’ve done it twice, even reached out to them. it is clear that this is not on their list of priorities, but for some reason Team survivors is (over infection, ff, grifball, maps, fixing achievements) lol. great game but bad execution–feeling an MCC kind of vibe where the content and fixes will come, but only after a few years.
3 Likes
Carried on with my old save file – having replayed the previous missions completed before completing the missions not completed – and the achievement hasn’t unlocked.
So, my options are replaying all of the missions yet again, or starting a new save. Either way, I have to play through the entire game LASO again. The achievement is a joke. I’m so damn sick of The Sequence, and seeing the same grey walls in every mission…
EDIT: Going through on a new save. I’ve unlocked the achievement Mix Things Up for using all the weapons on the Banished ship, so I know the game knows I’m playing it, and progress is being tracked. I’m going to complete all of the mission achievements during the run, so I’d better get that LASO achievement at the end too.
1 Like
I started a new run, Im up to The Sequence atm however now “The Spire” appears as not completed even though I beat it, this game is frustratingly broken.
5 Likes
Ditto. I even took a screenshot during the mission to confirm that I was playing LASO, so the tracker clearly still doesn’t work properly.
EDIT: I’ve now replayed The Spire, and it’s now showing as having been completed on Legendary. Fortunately, The Spire is the shortest mission in the Campaign, but that’s not an excuse. I hope it doesn’t happen with The Sequence.
I can confirm that starting a new save allows you to unlock Headmaster. Specifically, I made sure I had a save slot free, and then chose New Game. It unlocked after the last section of gameplay on the final mission.
For The Sequence, I pretty much exclusively stayed on foot - save for high-jacking a Banshee to just get past the garrison at the end of the first bridge, and using the Scorpion near FOB Kilo at the south beacon (for an achievement) - while avoided all the open-world activities (FOBs; Marine Squads; HVTs; and Banished Outposts). I did all of that because of how temperamental the mission has been, so didn’t want my objective to change. I skirted too close to a couple of activities, but ignored them and moved on. The mission registered as completed on Legendary first time.
If you really dread the idea of playing through again, I can recommend also going for the new mission-exclusive achievements, as it’ll force you to play a certain way at particular parts. Most of them are fine, but a couple will probably take…a few attempts. If not, try and do it co-op with a friend.
3 Likes
Yeah i started a brand new game, at first ”The Spire" didn’t appear as completed even after i did so I replayed the mission and when i checked it was then marked complete (So had to do it Twice).
Then i played the rest of the missions, checking every time that they appeared as complete, The Sequence I did the same, went all on foot to avoid any issues.
So finally after beating the game TWICE on SLASO i finally unlocked the difficulty achievements and Headmaster finally leaving me at 100% achievement completion.
It just sucks that i had to do the hardest challenge TWICE cause the game is buggy.
3 Likes
with laso can the bandanna skull be on for unlimited ammo and everything still count? like achievements and stuff
1 Like
Yes, as a matter of fact Bandanna is required, which i find funny cause that negates famine skull but hey makes it easier. You can also use the Tank Gun glitch so you can basically keep the Tank Gun as a secondary weapon and use it to blast your way through the campaign.
3 Likes
thank you for this, i will try it today
1 Like
Yeah, just make sure to start a brand new save, and when you finish a mission make sure all difficulty icons are light up (white) otherwise you may need to repeat a mission. Good luck bro.
2 Likes