Charming Castle - Doom II wad by Gert "volleyvalley" Parmask

Fun and quick vanilla-compatible map. Per volleyvalley:
"After the demonic invasion, you scoff at a small, but a rather charming castle, because it has seemingly been completely untouched by the hellish corruption, so one night, the curiosity got the better of you, so you grabbed your pistol with a few mags and you head straight into the castle to investigate..."

Played with the GZDoom source port.

Charming Castle by Gert "volleyvalley" Parmask
https://www.doomworld.com/idgames/levels/doom2/a-c/crmgcstl

GZDoom Source Port
https://zdoom.org/index

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