Not too bad. The tutors are great and good at explaining things. The online quizzes are not hard at all and pretty easy to get full marks in particularly since you can redo them every 24 hrs. However, the in class assessments which you have to do to get above a distinction are pretty hard, and need a bit of study to do well in i.e. review of hard questions in the tutorial. Overall, if you're willing to put a little work in to study for the fortnightly in-class exams, a distinction is definitely doable and credit plus is easy with minimal effort.