make it online co-op ffs, its 2023 get with the times

My boyfriend and I wanted to play this game but his audio wont play when he joins my session. I've done all the setting changes in the remote play settings which should make everything run correctly but he still can hear. I dont know what else to do, it make the game unplayable for him....

I have all the achievements except this one I've tried chasing the NPCs at the beginning for minutes on the beach, as there is plenty of space to do it easily. I have unlocked all the doors and chased the same NPC all over the island. I've gone on to chase the NPCs for approximately 15000 points. I have changed the language to English (Game in Spanish), also Steam to English. None of this has worked and I think the achievement is bugged. ...

Bought this game for me and my long distance boyfriend not realising it was only splitscreen, Will online multiplayer be added in the future?

I didn't understand what it means by "Chase an NPC halfway across the island" I tried chasing the goat, the pig and even the seagull but there are multiple invisible walls that block their way in some areas of the game. Anyone have others tips?