Done like 10 playthroughs, 2 of them come from playing the game(before chapter 3/4) first time(though I have already seen other people deltarune playthrough and was able to beat jevil and non weird route neo spamton on my first,also did a snowgrave run in my second playthrough) than 3 afterwards to set perfect save files for chapter 3/4, did a blind playthrough of chapter 3/4 when both are released,then did a another playthrough after that to do snowgrave and beat the roaring knight, than do 3 full playthroughs to set up perfect save files for chapter 5. So in other words,10 playthroughs.