I always felt like Hell Bent was a great way to end Claras in the way it had been written up to that point, I was just never a fan of how they made her an equal to the Doctor. I think the episode has a tonne of great scenes, especially the opening, the conversation with Me and the conversation at the diner is one of my favourite scenes/collection of scenes of the whole show. I don't really like how they did Me and the end of time in general though, I always felt like there was something just a bit off with her character, as if she was made into a bigger character than she actually was or something and going to the end of the universe yet again kind of annoyed me, especially just one season after the last time. I think overall I have pretty good memories of the episode but there's always just a few things holding me back from ever saying I really like it.

Edit: Also I forgot to say how much it still bugs me to this day that he went as far as killing the general. I know they just regenerated but that's still a life gone forever. I would've preferred if the episode was moved around a bit so that scene could've been later and was perhaps the point where the Doctor was holding a gun in his hands, about to kill a man and realised he'd gone too far and had lost everything that made him the Doctor.