I have done all missions on legendary but 2nd and 10th do not have the legendary mark, I have not got any dc while i was playing, Just go and check my achi on reach+maybe its a bug idk.
please help me
Perhaps you didn’t fully complete them? In example, maybe you accidently started at a checkpoint. Try just playing them through again.
From the Halo: Reach Support FAQ (Credits, Challenges, Commendations, Achievements:
Not getting credit for beating a mission
If you beat a mission but didn’t get the achievement, it probably means that you started from an insertion point rather than the mission starting point. Insertion points are selected from the Select Mission menu.
|| The Bouk || had pretty solid advice. Maybe try that!