This is a port of the PSX Total Conversion Doom 2 secret level #58 , which is called the mansion (old people will understand;) The goal was to transfer the map as accurately as possible, but of course there were some changes and innovations. There are secret rooms, traps and deadly doors)
Healing is possible only in one place, ofcourse, it's a doom, after all.There are all types of weapons except snarks. Although they can also be found along the way.)
Here is a video of how it was in the original:
https://www.youtube.com/watch?v=5hPjgwDDmro