This is a candidate video for my tool assisted speed run. http://tasvideos.org/6078S.html
Speedrun play-time based on time between Player being controllable, to the final kill shot on the boss.
This is the original ROM set played in MAME, on Easy Difficulty, with zero speed modifications.
I don't do speed modifications because you're not allowed to submit to tasvideos.org with modified ROM sets or speed adjustments.