Before you consider speedrunning, you want to be quite familiar with the game, its mechanics and the mission layouts. It's not recommended to start after only one playthrough which can turn off so many people. Especially when it comes to difference between Vergil and Dante. The biggest biggest misconception for many people is that they play similar for the reasons such as having similar moves like Beo Star Fall or Stinger. While it does eases the learning curve but, the further you progress as you keep playing as Vergil for example, you'll find yourself relying more on his own unique strategies than the ones he “borrowed” from his brother.
The excessive resets can be one big issue for most players Especially for Dante, in which can be difficult to play with time pressure on them after missing RG release or Gigazip. Therefore, do not aim for perfection until you are ready to break the barrier. Make your own back-up strats and get familiar with the Terminologies and safe methods that are used during the runs.
In the following sections, you will find important concepts and information that you may find useful for starting out with DMC3 Speedrunning.
Refer to DMC3 main page for general tricks being used along with tutorials here: