It was relatively easy in my opinion. I was unable to get question 10 (although I guessed A which I think was the correct answer) and the very last part of question 16, but nonetheless it was fine. If you were able to get your hands on the 2016-2018 papers, they were all strikingly similar in the way in which they were written (probably because it was the same writers). The actual HSC will definitely be harder in my opinion.