Follow these handy tips and you’ll get that 1CC in no time!

Designed by baf (Twitch / Twitter), this adds an “M2 Shot Triggers” style overlay with lots of additional information: current rank, which bosses you’ve triggered, and more.
Put this zip file in your MAME / artwork folder, do not unzip it
Open MAME, go to General Options (at the bottom of the main menu) → Plugins and turn on Layout helper plugin
F2 to load Service menu, or: press Tab, navigate to Dip Switches and open Service menuGAME MODE and press P1 StartThis will set your rank at the minimum amount (~3% for Normal mode). Treat yourself to a save state after booting and you only have to do this once!