I here by bring you more Wolfenstein goodness, adapted to work well with BOOM.
On top of that, I have uploaded HacX which is the Total Conversion to kill all total conversion on DOOM II. You have GOT to see this in action! Amazing game! Though keep in mind that not all the levels were completed, though the majority of it is there, and there are people out there hard at work to finish what they found in the original designer's notes.
WolfenDOOM: Second Encounter
WolfenDOOM: Treasure Hunt
WolfenDOOM: The Portal
WolfenDOOM: Escape from Totenhaus