Played on Hard difficulty (I am death incarnate!). A really hard map but quite build in Single Player like form but really buggy.
A note for the author: FOR THE LOVE OF GOD, place some alarm boxes instead of making mission fail on being seen by an enemy. I had crashes when too many of them saw me and failed mission music constantly repeating.
Map link: https://gamebanana.com/maps/172972
PS2 HUD: https://www.moddb.com/games/return-to-castle-wolfenstein/addons/ps2-hud
Weapon sounds: https://www.moddb.com/games/return-to-castle-wolfenstein/addons/xbox-ps2