Ok, I confess. This is hard. HARD! 
I feel like I'm sitting at the piano for the first day ever.
First I practised hands separately - LH soft legato. RH loud staccato. And reverse. This, of course, is easy.
Then try it hands together. LH soft legato and RH loud staccato is difficult, but... somewhat doable, after a few attempts. Somewhat. It still sounds like 💩 half the time.
Then, LH loud staccato, RH soft legato, yeah, no. My brain exploded before my fingers even touched the keys! This is going to be part of my routine for quite a while to come... then maybe I'll get it someday. Hmm! Maybe! 