Thanks for your findings on this! But are you sure you need the "-epicuserid=EPIC_USER_ID" switch? Have you tried some random strings here? Otherwise it would mean your downloaded files are tied to your user id, or (similar to standard steam drm) that you have to start the game at least once through epic to play it. Thats not really drm-free.
Topic on User talk:Dribbleondo
Okay, so here's something interesting. Putting in any random sequence of letters or numbers -- see here: https://imgur.com/a/s6h2JYe -- will simply create a new save folder for offline mode in AppData\Roaming\IO Interactive\Epic\ and will start the tutorial up and lets you play.
It is entirely possible to create and use a seperate ID, the game doesn't check to see if its valid with EGS, and it doesn't require one playthrough via EGS to use, making the game DRM-free and not dependant on EGS or IOI's servers.
Nice! Do you intend to update the wiki page accordingly?
Also, did you try your mentioned offline mods with this game thoroughly? I'm tempted to buy it, if a full offline experience is really possible.
I'll update the wiki page soon, yeah.
Offline Mode Enhanced got update a month ago, so that sees active development.
I have used Offline Elusives several times, and it still works last I checked.
Permanent shortcuts offline seems to be broken, however, so I will remove that from the list.
Just a note, you still can't earn weapons offline, but online items do sync over to the offline profile, and scoring is still not available (there IS a mod that does it, but they are of a dubious nature).