As far as I know about designing maps, I tad bit know about making maps as I had made a grand few before.

But the whole modding part of unity for SP is a different animal to me, at least by most part. I'm missing a few things, environment assets and what not. The tutorials is outdated and might need help around with that.

As issues are concerned, I could barely wrap my head around the whole environment assets, saving the mod which for odd reason goes missing. I already have 2018 Unity version from Reddit so that shouldn't be a major thing to consider as a factor.