Thanks for your feedback.
Well most things about the wad are explained in the txt. file, like what is the meaning of some things and such.
The Title Screen was inverted by mistake in the Slade - i cliked on it and it was upside down and I wanted to change it back, but then I was like "Hey, it looks actually interesting, maybe I should let it be!"
The Raccoon's purpose is simple - first I like raccoons and second - the last level take place in the Raccoon Palace.
Regarding to details:
It seems that I don't have some sort of talent for the details.
People are always like "Ree, there are no details!" so I take the map and add some windows/holes in the walls/columns/ and so on. And people are like "still no details" and I put there even more and more details everywhere and people are like "It's still a complete wolfeinstein 3D" - oohh then I don't know what else should I do :D So I am clearly lacking of making detailed maps. Maybe I suck as a mapper as general, who knows.
Also - I have no idea how to make some places more detailed. Like... there is a pier in the harbour - what details should be on the pier? It's just piece of wood. Or there is a warehouse - what details should I put in the warehouse? It's just a building with boxes inside.
So as you can see, I really struggle with this one, so I should better stick with 90s style maps.
Also I use this guide when adding detailes: https://www.realm667.com/index.php/en/90-articles/tutorials-more/mapping/318-mapping-the-art-of-high-detail and I follow some rules of theirs. Still very wolf3d-like for people.
Thanks again for your feedback.