Two things to ease your mind. 1. On your first drop in, you were ensnared in web and woke up at a different starting area, so that was your 1st time coming down and "seeing" that room properly. 2. I really don't feel you need to farm too much unless you want to max all the armor I guess, however, if you want to, there is a very easy way using the ashen "explosive" transform, and your newly discovered shrine and the path to the venom daoist, which had all those sacs, most of which are inert, but still worth will and exp.
Oh btw, a small secret thing, if you break all of venom daoists arms in this fight you get a Venom armguard. Not a great armor piece but needed if you want the achievement for all armors. Also, it's fun how in every chapter there's been a boss that mentions testing you for his brother. White robed noble, yellow robed squire, green capped martial artist, venom daoist.
@@BlueLizardJello You apparently have to hit the Venom Daoist from behind and break his arms for them to drop in this encounter. They cause constant poison application to the enemy