When I did it, we had Jie Du for Abstract Algebra (first half of semester) and Lee Zhao for Fundamental Analysis (secomd half of semester).
Abstract algebra was difficult due to the fact that Jie Du rarely gave us intuition to start with but he was very rigorous. It's new stuff too so you can't chill at the beginning. Iirc, it includes group theory and how to use abstract objects to work geometrically, and their properties.
As for Fundamental Analysis, it began with mostly inequalities. You did MX2 in highschool so it might be fun (friends and I thought it was super fun!). You learnt stuff like Cauchy Schwarz, Jensen's inequality etc. New stuff appears after and it's weird stuff (p-adic numbers, dedekind cuts,...) but I didn't look at those properly so can't say much.