You should be able to complete 5.2 on R3 champs. I would say your best choice would be go into Act 5 and see how far you get before it gets too much for you. When you hit that point work out whether it’s you who’s not good enough yet - are you failing to dex specials/pushing to Sp3, missing too many parries etc. And go back into Act 4 and practice these parts of your gameplay.Act 4 exploration will take forever unless you’re spending units on refills and while the mastery points are nice, the ability to do the Uncollected MEQ and and story based rewards outweigh this, certainly in the short term.
You should be able to complete 5.2 on R3 champs. I would say your best choice would be go into Act 5 and see how far you get before it gets too much for you. When you hit that point work out whether it’s you who’s not good enough yet - are you failing to dex specials/pushing to Sp3, missing too many parries etc. And go back into Act 4 and practice these parts of your gameplay.Act 4 exploration will take forever unless you’re spending units on refills and while the mastery points are nice, the ability to do the Uncollected MEQ and and story based rewards outweigh this, certainly in the short term. The only problem I have is that the opponent don't launch his special until he reach to 3 special