This seems to work:
With huge thanks to @Gareth and @mbingo, there appears to be a word drawn by the letters in the black boxes, and the word is:
The job here appears to be to solve a crossword where most of the crossword isn't visible.
However, the words for the crossword are given and the number of letters below the crossword matches the number of crossword boxes which are visible.
My procedure (as I remember it) was...
There seemed to be 2 eight letter words poking out in the first black area. There are 3 eight letter words in the list, but UNSEEING starts with a "U" which is not in the list of letters under the figure. So I placed the words ASSASSIN and HANDICAP in the two slots (arbitrarily).
Looked at the middle exposed part. All words containing "P" either had an "A" or an "I" in front of the "P". But "A" was already taken by ASSASSIN, so it had to be an "I", meaning the word RIPE. I then needed a word connecting with "R" in RIPE and only FIREFLY fit. This gave me the words FRONT and GREEN. It also gave me TURN as the only word with a "T" as the fourth last letter.
After this my recollection gets hazy.
I believe I noticed that UNSEEING fit across the two other eight letter words. This gave me NUMBS. To continue on the right side it seemed only a word starting with "R" would do, i.e. RESET. I placed it at the bottom. I noticed that I still needed to have a word with "K" in the parts poking out and could place EVOKE. At this point, given the letters and words remaining, it just started to fall into place.