I did not find a good solution to allow replanning that works while the game is in offline mode. You can save after the initial cutscene to replay the same mission multiple times, but replanning will cause the whole map to reset, including random target choices.
Viewing post in HITMAN 3 Random Targets comments
I see, thanks for taking the time to find a solution.
I actually have another question if you dont mind, I own a Steam Deck and was trying to figure out if I can install this mod on that as well. The problem is, the framework is a .bat and I can't run that on a Linux system.
Is there a way to get the files themselves after the installation, and copy them to the correct path manually?
It's a while back, and I'm at work now but I believe I did this:
-Install game on PC, and install the mod framework + random targets mod ( and scoring etc if you want that )
-Theres a folder in your hitman 3 installation, with a lot of .RPKG files. Sort these so you can see the newly added/overwritten files easily.
-Copy these .RPKG files AND the packagedefinition.txt to the same location on your Hitman 3 installation folder on your deck. Overwrite the files when asked.
If this didn't work let me know, I can check on my deck what I really did, since this is from memory