I've been running Moving Targets with my capped cleric and a hireling because I like the challenge, and it would be fun to six-star. (I already six-starred Behind The Door.)
Today I got lucky with the crests and made it through the entire mansion. I thought at this point I would get the star for activating all the portraits - I'd run by every portrait marked on the map from the Wiki, which agrees with the locations I've found from running this map so much. But the objective said I had six left!
Careful counting on the wiki map shows 31 portraits. The in-quest objective shows as needing 36 portraits after the first one has been activated (37 total). Does anyone know where the missing or hidden six portraits are?