For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
1.4 will bring many changes to the PC version. We strongly advise making plans to back up your worlds and players prior to updating your game. More details here.
Begin your search for Journey's End information here and here. Please report bugs and issues for Journey's End here.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
We designed the Bestiary to be a world save mostly so you and your friends could complete it together in one world. This also helped keep player save file size smaller, track progress easier, and enable Zoologist to be her best self. :)
Correct- you can fight EoC normal then swap to Master and fight him in that difficulty.
You cannot swap infections with the click of a button but it is now possible to build the opposite infection so your world has both.
Yes- you can fight invasions as long as you want. We extended it...
It is definitely possible solo with a fresh character.
You can literally dupe anything. You set the rules on how you want Journey Mode to work. If you think money duping is OP- just don't do it. God mode too op? Don't use it. Journey Mode is all about freedom to play how you want. :)
You only need one to dupe an item/weapon/accessory for infinite. If we don't change it between now and release it takes 3 boss summon items to unlock infinite. We also made it so you can create the opposite infection in your world if you choose to do so. :)