Absolutely. If you're launching the game from a shortcut, you can copy-paste it and add the following to the target:

-vr=steamvr
or
-vr=oculusvr
or
-vr=osvr

If you're running through Galaxy instead, well, we had totally forgotten to add those launch options. :| Those will be enabled later today, and that'll allow you to just select which one from the Galaxy interface.

Yea we are working on getting these launch options to you but are being slowed down by strangely enough problems with STEAM (don't ask).... in the meantime as Pixley as pointed out if you run the launcher manually provide one of the three command lines while galaxy is running:

launcer\Descent.exe --gog --vr=steamvr
launcer\Descent.exe --gog --vr=oculusvr
launcer\Descent.exe --gog --vr=osvr

The --gog line is the one that tells it to use galaxy authentication, leaving it would result in a prompt for a username and password from our website which wouldn't work until we can get gog linkups available with our site.

I have already made the appropriate changes to fix the problem and provide you an option at launch, but it may be a few days (especially with the holidays) before we can get it to you.

Ok you should now be able to launch these directly through Galaxy.

Galaxy does seem to hide the options slightly, to get to them click on More, Other and you should see three options for the different kind of VR headsets... the attached image should help.

Please let us know if you have any problems with these.