So my idea for this game is to recreate the entire underground, so the player can explore it again, but this time Sans will be there. Sans was always keeping an eye on the player throughout the original game, but I want him to actually be with the player this time. So when the player does things or looks at things, Sans will comment on it or try to steer the player in the right direction. Maybe the player could even talk to Sans whenever they want and show him some items to see what he says about them. As for the Sans fight at the start, I want that to be more like an intro rather than the entire game.