To seek a way out of this asinine dilemma, fixate on the base theme and circle any interesting points you find.
If you've got 999 problems and this puzzle is one, you might want to look into numerical constants, rock bands, number systems, sports, words, important dates, phrases, more words and geometry.
Each panel relates to nine, 9 or IX in some way. Once you have each panel, apply the theme to get something satisfying the theme, and index using the 999 characters. The letters you obtain will give your last reward.