Now I had to edit some runs to make a new frame rule compared to the other one lmao. Anyways, to begin the run, you want to use the first frame of the transition, which is shown in the image with the 2 spikes. This will be the start point. Then the end point is the first frame of the cutscene after you press the final button of the game (this is the cutscene where the dragon's chest is showing).