It's a private gamemode and I doubt it's up for download, as far as I know
I can check later if my download has the file and update with the link if I find it.Edit: Here it is: https://hostr.co/RXLWufpAwdLnnote that there's a LineCounter.exe file inside the gamemode folder for whatever reason (was originally there as I haven't tampered with the dump file other than converting it to a 7z for more compression)