Retroarch can be used since it is compatible core for other gaming systems like Mame, SNES9x, FBA-FBNeo, and other ones and also used for Retroachievements. The only exception in Retroarch is the usage for smartphone/android which most leaderboards won't allow it.

https://www.speedrun.com/users/coachingclasses

https://www.speedrun.com/users/coachingtraining

https://www.speedrun.com/users/coachingorlando

https://www.speedrun.com/users/billywilliams/comments

https://www.speedrun.com/users/coachingdisha/comments

Last hit to Final Boss Mask, when the energy bar boss is 0. Better that way than expecting some seconds.

https://www.speedrun.com/users/HealthyBuddy

https://www.speedrun.com/users/Dibber_India

https://www.speedrun.com/users/xefosob

https://www.speedrun.com/users/tobope/comments

https://www.speedrun.com/users/joyspringmentalhealth

https://www.speedrun.com/users/MadiaYaqub/comments

https://www.speedrun.com/users/LOSHAR/comments

https://www.speedrun.com/users/betcaffeine/comments

https://www.speedrun.com/users/sxDavid/comments

SashaRebels

https://www.speedrun.com/users/ana167/comments

https://www.speedrun.com/users/Atish/comments

https://www.speedrun.com/users/EllaJewell/comments

https://www.speedrun.com/users/Flot1943/comments

https://www.speedrun.com/users/Priyasingh54/comments

https://www.speedrun.com/users/God_oy/comments

Ok... Steam category was created by request. But by seeing Bosscat's comments and also considering Teru's idea the decision for Steam/PC is gonna be together with Arcade category. @Teru you can re-submit your run if u wanna do it.

https://www.speedrun.com/users/marryjames

https://www.speedrun.com/users/HandricksonJustin/comments

https://www.speedrun.com/users/Mateojohn/comments

https://www.speedrun.com/users/IsaacSouzaSilvaJunior/comments maybe???

https://www.speedrun.com/users/queenbanni61/comments

https://www.speedrun.com/users/jitusah/comments

Definitely speeding up/slowing down is not permitted for this game. Just play the game in Normal/Default mode without changing the video speed. I suggest you to check the top runs and you will realize that these runs were perfectly done in Normal mode.

https://www.speedrun.com/users/zadreliyda/comments