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.
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.
I'm not sure because there is always something harder than the previous. But usually I find backgrounds to be challenging, considering they are very large. Actually, big things in general are a lot of work, like Moonlord.
Sou auto-ditada, não fiz nenhum curso. Mas existem vários tutoriais bacanas na internet, dê uma olhada no "Information" ali que eu botei uns links com tutoriais de pixel art e os programas que eu uso o/
You can follow me at @CrownoO on twitter. I don't post very often, but currently is the only place where I post art some times. And unfortunately I'm not entirely sure about who did the Death Sickle sprite :<