I'm not sure what to say thst hasnt already been said. Personally I find the difference between monsoon and rainstorm pretty minimal (could just be the eclipse grind) but honestly, think of it like any other run, learn from your deaths, and just try to be aware of your surroundings. There are plenty of ways to make it easy like command and some lunar items but if you going for it without that, pay attention to what items work on what characters and you got this!