Firstly, you'll need to download Autosplit, and of course, Livesplit.

Autosplit Download - https://github.com/Toufool/AutoSplit

Livesplit Download - https://livesplit.org/downloads/

I recommend making sure you have Global Hotkeys enabled to avoid missing any splits from being tabbed out. To toggle that just right click Livesplit and go Control > Global Hotkeys.

How to use -

After you open the AutoSplit application, hit "browse" and select the "Red Dead Revolver (Cheat+NG+Any)" folder.

Check your settings in the "File" tab on the top left and make sure your keybinds are the same as your Livesplit.

Next, you'll need to click on "Select Window" then click on the window displaying the game.

Then, you're all set to just start running.

NOTE : It should just automatically detect Red Jr. in the beginning to start the timer; each load screen will be detected for each split up until Fall From Grace, and will only auto hit the last split, if you kill him in the Duel. So, if you kill him before the Duel (in Cheat%) it won't automatically split.