This is DooM 2 - 75% done in '94
First few seconds of the video show the version of the engine and levels. The levels were published by John Romero:
https://www.doomworld.com/forum/topic...
Thank you a lot, it was a pleasure to play through the unfinished maps!
The beta engines can be downloaded here:
https://www.doomworld.com/pageofdoom/...
Enjoy!