Lt. Ty "Bones" Halderman was named after the leader of TeamTNT who passed away during Blade of Agony's development? An homage to a major figure in the history of Doom modding.
the jukebox not only survived WWII, it ended up being used in a space station built by the Union Aerospace Corporation!
Cpt. James Ryan and General John H. Miller are named after characters from a well-known WW2 movie?
you can find & collect special Mayan artifacts to unlock a secret mission in Chapter II? Sophia Hapgood even wears one as jewelry — doesn't she look charming?
there's a secret mission in Chapter II inspired by another WolfenDoom original that you can access by collecting all the Ancient Artifacts?
Blade of Agony's biggest inspiration is WolfenDoom by Laz Rojas, who is also an actor and director? Just in case you wonder where you get your extra supplies from...
there's a secret mission in Chapter I inspired by another WolfenDoom original that you can access by collecting all the Eisenmann files?
Juliette Bertrand's callsign comes directly from Wing Commander? "Shotglass" also works as the barkeeper, if you're missing the reference!
there's not only an homage to Indiana Jones and the Holy Grail but a complete replica of a famous scene in C1M6?