I guess working in Netradiant Custom is viable, but you have to open a Quake 4 map that already has single player entities in it.
If you open it fresh, there is a bare definition file it must have internally that doesn't seem to load a full entity list, not even guns.
But if you open a map populated with the proper entities, NRC figures out that it needs those, loads them properly and allows you to drop in stuff like those weapons which previously were gone in the right-click menu list
There doesn't seem to be any way other than this to convince NRC to use proper defs
More puzzlingly, this is a per-session thing. If you start out with a blank slate with an incorrect entity catalogue loaded, if you open an existing map, it does not pull the new list. You have to set NRC to reload the last map on startup, close out and then restart NRC with the proper map.
Hooray, first Quake 4 map! Finally summoned the energy to compile a months-old test map.
When you're starting out with something new, this is often what it looks like: an empty room with a few walls just so you understand the steps necessary to be able to stand in a map of your own making.
10 minutes of gameplay from the canceled Quake 4: The Awakening Expansion
This brought back so many memories. #Quake3 and #UT99 were a huge part of my life back then, genuinely good times.
Now #gameplay footage from #Quake4: The Awakening has surfaced on #YouTube, an expansion that was cancelled after only ten months of development. The footage shows early environments, experimental mechanics and content that was clearly never finished.
Mostly documentary value, but still a fascinating look at what could have been.
Apparently some elements like the Dead Zone #multiplayer mode actually made it into the 1.3 update back then.
Bittersweet to watch.

🎮 Sorpresa per i fan di Quake 4: riemerge un DLC cancellato dopo anni! Un tuffo nel passato per gli appassionati del genere. #Quake4 #RetroGaming
🔗 https://www.spaziogames.it/articoli/quake-4-the-awakening-spunta-un-prototipo-inedito-2026-04-15
I refuse to reward that level of stupidity.
Never-Before-Seen Quake 4: The Awakening Prototype Gameplay Surfaces Online