This is a tool-assisted speedrun. For more information, see http://tasvideos.org/4218M.html. TAS originally published on 2020-06-27.
Castlevania III: Dracula's Curse is the story of Trevor Belmont's battle against Dracula from the times before Simon's battle in Castlevania. In this complex and difficult game, there are three playable allies whom Trevor can recruit: Alucard (Dracula's son), Grant DaNasty (a pirate captain), and Sypha Belnades (a mystic warlord).
Unlike the other branches of Castlevania III, this run uses a stairs glitch in Block 4 to climb directly to Dracula and skip most of the game. Only the USA version allows this glitch to work, so it was used instead of the Japanese version, which has superior sound quality.
In this run, scrimpeh (http://tasvideos.org/Scrimpeh.html) beats the predecessor movie (http://tasvideos.org/3224M.html) by 52.59 (3,161 Frames @60.098813897441 FPS) seconds through new tricks and better strategies.