So DeftonesBand who has been posting trophy lists for various games early for several months now just put up the list for Days Gone. It has 46 in total and looks pretty easy but does contain Story spoilers so be warned if you want to go in blind.
https://www.reddit.com/user/DeftonesBandPSN/comments/b3qdbf/days_gone_trophy_list_revealed/
https://www.reddit.com/user/DeftonesBandPSN/comments/b3qdbf/days_gone_trophy_list_revealed/