If you're saying SOR4 sucks you're smoking crack it's currently the best selling SOR title you're just afraid of change that's what sucks your opinion is objectively wrong
i will be using this save for my 5.1 and 5.2 versions, i am planning to make SORR Mods and completing SORR three times before i could do it would've probably broke me. lol
Probably a little late to help you but just exit outta the game by alt-f4, task manager, alt tab then close the window. Pretty much you just gotta exit the game without actually quitting and it will save a state that loads the next time the game is run and puts you right back at the beginning of the last level you got to.