Hey, I'm Ossy Flawol! I'm a scalie with a nack for all things related to Portal, and am the lead developer of Portal: Catalyst. Discord: Ossy Flawol#3580
The ISOLOHPOBIA map, it is known as 'stillalive_3_dream" ingame, use the console to play it.
Portal: Epic Edition's Definitive Edition is here with it's first release, more updates are to be expected in the future.
the mapps necessary to play the actual mod, what di you expect