So far I have cold solved 25 clues and some of the have had 'give up now' writ large through them. The New Yorker clue was one of them. The Detective and Hope clues are others.
Unless I can get some semblance of a grid started I think this is a DNF. A shove in the right direction for 1 or 2 down (which I have an unparsed answer for) might help me get the grid going. I have quite a lot of the bottom of the grid solved but not convincingly entered.
Dylan, the first across clue - I think...mount is 3 letters (common crossword one) reversed. 'Riding' means containing. The result is a common word with an uncommon usage. At least, that's what I have worked out.