Hey there, so I’m trying to finish off the last few achievements I have in MCC (10 more!) and 2 of them remaining are for Halo 2 and 4 on legendary in under 3 hours. If anyone with preferably a bit of experience could help me out it would be much appreciated.
So for Halo 2 where I stand riught now: I have 92 minutes remaining for the final 4 missions I need, being Sacred I con, Gravemind, High Charity, and The Great Journey
Then for Halo 4 I’m currently at about 4 hours 2 minutes as best time but haven’t truly speed ran any missions other than Dawn/Requiem/Shutdown, so I need to essentially shave an hour off of the missions other than those 3
They don’t need to all be ran right now but if anyone could help with any of the remaining ones it would be super appreciated! 
Thank you!
My gamertag is my username so feel free to just shoot me a message on live