One thing I know for sure is that there probably wouldn't be automatically reloading weapons, ammo, instant-heal medkits and armor scattered everywhere 🤷♂️
This map slightly reminds me of E2M7, especially of that behind the UAC door area near the start. I think it also has to do with the color palette and the slope in the third screenshot.
I recorded an analogical video, this time for map 02 (v. 1.0) / map 03 (v. 2.0): Who's That Demon? Unlike how it was in the original release, I no longer dare trigger side enemies in the newer versions :}