Fairly hard
It would be kind of inconsiderate of me to just go out and tell all of the answers to the ones I got. I will say that I was lucky enough to get a secret medal on my first try! At first, I thought this was going to be something where I had to type in the answers. It was a little hard to tell at first, but that hand icon did make it easy to understand. If nothing else, it was great to see all of these authentic replications of art pieces. Looking at paintings has always been a pastime of mine, especially considering that few modern people seem to make paintings.
I managed to get all of them without any hints until finding one that did not give me a hint. The music/sounds were really good and it was great how clicking the wrong thing wasn't such a big penalty. It was also great to include the names and years of each painting. I am not sure if these painters intended them to have meanings, but whatever. While it did not have much action, definitley a classy game.