So today should have been a happy day, because I finally completed Halo Infinite LASO after putting in 80 hours.
Bear with me, I know people say this is the easiest of all LASOs, but I am not gaming as much as when I was younger… I also did not cheat/skip really except legit skips in few places (legit= just grappling or thrustering through rooms without clearing enemies). Even if I’d new the cheat skips or gone tank gun thing before, I wouldn’t have used them, because I would have wanted the real achievement.
Especially the beginning warship Gbrakoon was so superhard for me, getting acquainted without any cores, sword and rocket launcher, learning you need to have full shields for a checkpoint, etc etc… I think that and foundation Tremonius boss were the hardest…
Sure it gets easier with cores, rocket launcher, special sword, and finally thrusters. But boss fights, hunter and brute chieftain pairs still veeery challenging and also always requiring a bit of luck after many attempts…and then sometimes setbacks even before a completed boss if you didn’t get your shields filled up. All was okay as I was always progressing though 
Today I finished, so excited and happy now to do the speed runs or pvp achievement, but but guess what? The “normal” completion heroic and legendary achievements popped, but not headmaster!!! 
Take these back, I just want my LASO Headmaster (and I though you couldn’t do others with skulls?)
I had read of problems, quite a bit ago though and would have hoped they been fixed (I mean they have removed the tank gun, but left problems with an >80 hour achievment in, WTF, srsly? What is so hard to get it right, or let players at least check if it works for them somehow?).
Anyway, I never quickresumed when game crashed and loaded fresh (but my xbox just suspends, so I usually continue right where I have been, that problematic too?)
Also, I regularly checked that all 12 skulls are still on (cannot miss that also with blind skull…)
I’m really not that demanding, I can live with bugs, with glitches, with imperfections, I really like Halo Infinite, while it is annoying I can even live with things like setting me back 10-30 minutes in progress. But voiding 80 hours of challenging game time? Seriously?
Can anybody tell me what I did wrong? I read that achievment progress tracking is broking and just stays at 0% even if you are on track, so even if I wanted to retry (not sure if I would though, but lets assume theoretically) there is just no way in-game to verify that I’m still on track besides completely finishing the game? Why cant you just lock the skulls in for a certain campaing, or have a usual confirmation asking “if you continue now your headmaster achivement will stop counting” or something… I don’t get this UX or in what way it can be broken for basically the longest and hardest achievement in this game 
Is there anything I can still try and do? (Quit and also completely restarted game already multiple times), is there an official support ticket I can file anywhere? I’m just staring at my
Man, its so destroying… almost believe that may be the end of me touching this game again if there is no cure :(, and maybe that is good then.
) but more only 40h, because the timer just being cumulative I realized (geez what is not broken? would have been also surprising, because looking up the achievments it took me a month and I couldn’t have averaged that much per day, surprised it has been actually a bit more than 1 hour… )
