The execution of the run looks excellent, but I am also not sure what separates the run from the existing branches. There's plenty of other movies that showcase Juste's crazy movement, which are also much less monotonous since it isn't the same room over and over. The damage stacking is also present in every other branch. I would personally lean against this obsoleting
2455M, as the Simon Boss Rush shows off more unique things from to the other branches compared to this one.
I'll admit I haven't done a very good job at keeping up with the changes to the site's rules, so my understanding may be way outdated, but if we want to limit the number of categories for a game, I honestly don't think this run shows enough unique things compared to the other runs. The technical quality of the run looked great, and it is really cool to see just how fast the Boss Rush can be beaten, but if we just have one, I'd honestly much rather keep the Simon run.