I mean, not much but it's does help get away from the boss getting high up, I did use my egg hatching to constantly shoot her down and catch her and then attacks again when stunned. But using charm work too, kisses and ramming is good too.
You have to goes to the next level by beating the boss and passed it, you have to find the imp with a drink which you then drink it, drink until you get it permanent.
If you mean going to the desert level, you first fight through wolf girl boss and passing through you can get to the next level going passed the town. Wip stuff? Then visit their patreon and get the early access.
I just went to mistyra military desert place and fight her which I can then choose her to follow me. Though not much going on. You have a new option to date bell. Dunno about your problem.
I think it's the black screen bug, had it happen in the cow milking when I went to sleep there, right now it's doesn't but it's seems like it's sorta uncommon issues. I usually just fixed it by getting to sleep or leaving could be possible.
This hot spring, or you can get up top of the main base with that Voice lived in that has a hot spring too. You do have gem? Right, use it to remove certain parts.
It's this one, after she give you a drink, you then have to drink it to gain futa. But it's temporary so you have to drink more until it's permanent so you have to have a bit of health to do it until the player say it's permanent.