Super Akuma Emperor

much easier if you can just smash 4 buttons at once through the ending

If you can switch between mashing and hitting on-beat quickly and know the tricks, you can probably lower the perceived difficulty to mid-tier.

It's fast, but I don't think it's quite at a level 25.

The speed is insane... Personally, even if it goes up to 25, it's mid-low tier or higher... I barely cleared it after becoming a 26 user ㅠㅠ