stuck top right. He seeks chance of gold. 10.
If 'did it pale into huge significance for --' which was (Neil Armstrong)is MOON, then it starts with N N???P???O?
Similarly the O from MOON would start 'a tequila or cocktail suits oppressive atmosphere' 10. For which I originally had 'equatorial' from anagram, but which does not seem to fit clue.
Also 'acid smell almost strong' 5 starts with B.
and I have nothing for 'fighter was total zero' 4.