Mega Man Zero 4 - "Ragnarok Core" S-Rank [Junk Armor] [No-Deaths] +Ending
Junk Armor makes all your attacks deal double damage, but you also take double damage. So you can't afford to take hits. You can't use any Elf powers or any other parts (this means no double-jump).
I was using the Junk Armor to practice the bosses then I got this run where I didn't die and did alright on many of the bosses.
My high overall score average saves my S-Rank in the end; so I thought I would upload this otherwise decent run. So basically, the better you did in all previous stages, the more lenient the game will be when it comes to S-Ranking the final stage.
The run is far from perfect, as I haven't practiced dodging everything the bosses can throw at me. Had Weil performed his Weil Numbers attack, I would have probably taken some more damage (aka died).
Took a bunch of stupid hits too. -_-
I left the ending in because I think it's one of the best scenes of this series.
To get the Junk Armor, you need to craft the JunkHead, JunkBody and JunkFoot parts and wear them all together while disabling any elf effects on Croire.