I did it by myself, so info is me(I forgot all the details
).
But I can give you a few tips about what to do.
There are a lot of code in there, you need to focus on what you want to change in the game.
For example: let's say you want to increase max lust amount
First make a back-up of the Assembly-CSharp.dll by copying it to somewhere else. Make sure to create a back-up because it's very easy to break the game if something goes wrong. Then open Assembly-CSharp.dll with dnSpy and press ctrl+f to open search section and write "maxlust", double click the result to go to its location.
It should look like this:
View attachment 1657672
Right click anywhere on GetMaxLust() function and click "Edit Method", a new window should open allowing you to change the code. From there you'll want to change value on this line:
int num = X;
For me it says
int num = 100;
but I remember changing a lot of stuff so value of that variable might be different for you. Click "Compile" button after changing the value and that window will close and code will change. After that don't forget to save(ctrl+s) the file. If anything goes wrong just restore the back-up file and try again, this is just an example though, you'll have to find where are the values of everything by yourself.