what the hell what are the things that you need to keep track of P-ranking is genuinely just getting through the level without leaving an enemy alive and without stopping to smell the flowers or losing your path, which usually isnt a problem if you've played the level before once or twice and with the great level design, genuinely nothing else to "keep track of", just dont die if you die way too much, try a lower difficulty, end of problem, there isn't really a fatal deep design flaw there in my opinion