Endurance is, of course, important. Your stats should depend on which skills you choose. The story is "winnable" with any combination that I tried. Try to pick stats that coincide with the skills you choose. So, if Bruiser requires strength, and you want that, make sure to have plenty of strength.
The main thing to remember is that the story is checking and rolling dice behind the scenes. So, even if you have a trait, if you don't have the stats to allow the trait to function, it won't.