1) Asset 2) Field 3) Field of achievement 4) Field of work 5) Forte 6) French word used in English 7) Job at which one excels 8) Line of work 9) Long suit 10) Movies, to De Mille 11) Occupational specialty 12) Old Field of work 13) Plus 14) Profession 15) Speciality 16) Specialty 17) Strength 18) Strong point Found on https://www.crosswordclues.com/clue/metier
Mé`tier' noun [ French] Calling; vocation; business; trade. « Not only is it the business of no one to preach the truth but it is the métier of many to conceal it.» A. R. Colquhoun. Found on http://www.encyclo.co.uk/webster/M/59