The completion of platinum in Rayman Legends took me over 3 months, the achievements you mentioned I finished with the help of the second account. If you want, I can help you, even though I can not look at this game anymore. We can get along later in PSN, my nickname: pi1415926535
And excuse me for spelling, I use google translate, it's just faster for me.
Will do!When you find time, invite me to PSN and we can start playing.