The Chapter IV achievement of finishing a level 70 greater Nephalem rift on Torment I or higher is not checking the box.
I’m finishing the rift under 15 minutes, actually my last time completed was under 7 minutes. There is no time requirement listed for Chapter IV. Am I missing something?
Using Windows 11 with an NVidia RTX 3070, I am playing as a Necromancer that is level 70 and somewhere in the 400s for Paragon level.
The requirement for Ch4 is indeed for a Nephalem Rift, but on TI , not TX.
There is no time restriction on that Nephalem Rift. Click the upper box and enter the yellow portal.
Higher level Chapters do have time limits. The timer starts when you open the Rift and closes when you speak to Orek, not when you kill the RG.
Level 70 means the Rift Level. (Which will also be your Character Level, if you started the game).
Nephalem Rift is NOT a Greater Rift. (As @Leviathan and @yessquire pointed out).
Torment I difficulty or higher is Game Difficulty.
For later Chapters, when doing the timed Nephalem Rifts, keep this in mind:
The timer starts as soon as you click ACCEPT to open the Rift. (See image below). NOT when you enter.
The timer does not end until you see the Event Complete Toast Window popup after talking to Orek. (See image below). You can skip through his dialog if you need to.
Since you’re supposed to be in a Nephalem Rift, 15 minutes, 7 minutes is irrelevant.
I think you mean Map Level. Game “level” or Game Difficulty should be Torment I or higher for this Objective.
However, as @RedXBoar has confirmed, they were running a Greater Rift 70 from a Torment I Difficulty. Which doesn’t make sense anyway. Game Difficulty is NOT related to Greater Rift Levels. That is, you can run Greater Rift 150 from a Normal Difficulty Game.
What I mean, for the sake of being precise, is that it is not character level, it’s, what you called, map level that has to be 70 to get this achievement. Of course, when you start the game, the map level is equal to your character level, but you can get this achievement with a character level 1(ish) when you join someone’s game who is already level 70.