This speed-run is hard; not only do you have to go back through all your runs and time them yourself, but there is a big difference in the number of enemies between v21 (my version) and v19 of Brutal Doom. V21 adds lots of Imps and Pinky Demons at the end, which definitely saps time, even with being able to exploit the game to only spawn one Baron of Hell. Lots of practice might get to a 28, but getting lower with those number of enemies is a very, very hard task to ask of anyone.