Beware of Falling Angels - Eternity Engine Doom Wad

Gorgeous level for the Eternity Engine source port. Amazing architecture and use of portals. Great gameplay with challenging gun fights.

Played with the Eternity Engine source port.

Beware of Falling Angels by Albatross
https://www.doomworld.com/idgames/levels/doom2/Ports/a-c/bofa

Eternity Engine
https://eternity.youfailit.net/wiki/Main_Page
https://www.doomworld.com/forum/topic/119425-eternity-engine-40200-forseti/

Doom II by id Software
https://store.steampowered.com/app/2300/DOOM_II/