How to Play on Multiple Computers (with same Save Game)

Since there appears to be no Steam Cloud setup at this time, you are forced to manually transfer your save files between computers. A royal PITA but can be setup to be done automatically using Google Drive , OneDrive, or similar software if you wish.

First, navigate to your Save Game location on the computer with the save game you want to use, that can be found
C:\Users\{USERNAME}\AppData\Local\Test_C\Saved

RAR or ZIP your SaveGames folder, copy that to a shared network drive, USB drive, or directly to the PC you want the save on.

Unzip/copy to the same location on the new PC. (IRR must have run once for this folder to exist on the new computer) Paste the save game in the same location you took it from, overwriting everything.

The end, rinse and repeat if you plan to bounce between computers like I do.

The Guide

Here