i see, looks a bit complicated, i think you could simplify that.
First of all, you don't actually need Daphne and can start everything just with Hypseus. I don't use Daphne at all, cause Hypseus supports all Daphne games and the Singe/2 games after encoding to m2v. In the hypseus folder you have the vldp folder for Daphne games, a Singe folder for Singe games, rom folder, bezel folder, basically everything under one roof. And i'm pretty sure, instead of pointing to the hypseus.exe with this command C:\RetroBat\emulators\hypseus\hypseus.exe, you could point to the bat, i.e. C:\RetroBat\emulators\hypseus\daphne_roadblaster.bat. The windows-batch-files are availabe for downloading in the hypseus repo on github and the bat files should be placed in the hypseus folder. Then you would just have to edit the arguments in the bat files for specific purposes.
The Roadblaster bat file looks like this for example
hypseus.exe roadblaster vldp -framefile vldp\roadblaster\roadblaster.txt -fullscreen -nolinear_scale -bezel roadblaster.png -gamepad
As you can see you don't have to point to the rom folder in the hypseus folder, hypseus is automatically using the correct rom.
With this argument in the command line roadblaster vldp, i'm telling hypseus, that it is a daphne game and it uses the according rom then.
Then i just need to point also to the framefile with this argument in the command line -framefile vldp\roadblaster\roadblaster.txt.
And those arguments are for settings to load the game -fullscreen -nolinear_scale -bezel roadblaster.png -gamepad, using a gamepad, bezels etc.
And for starting Singe games the command line in the bat file looks like this
hypseus.exe singe vldp -framefile singe\F13\F13.txt -script singe\F13\F13.singe -sound_buffer 2048 -fullscreen -gamepad -set_overlay full
So you could start all games via the according bat file with hypseus, no need for Daphne and those long command lines C:\RetroBat\emulators\hypseus\hypseus.exe roadblaster vldp -framefile C:\RetroBat\roms\daphne\roadblaster.daphne\roadblaster.txt -useoverlaysb 2 -homedir C:\RetroBat\roms\daphne -x 1920 -y 1080 -fullscreen -opengl -fastboot -force_aspect_ratio
I hope Retrobat is similar to Launchbox and you can start the games via bat and not just by pointing to the exe, it is much simpler, give it a try, if you have any questions just ask. 😉