It seems like when I press ESC, the space bar, or the left click to get all the stupid annoying intro stuff to go away, many times it will open multiple instances of the game.
Why? This is really bad with Doom 64, but can happen with any game.
Lutris might register multiple inputs when skipping intros. So prevent multiple instances. In the game you mentioned, characters are kind of bloody monster, so you can choose a blood meaning japanese name that you and your character well.