So to defeat the Dodorex you need to be VERY end game. To defeat it you need to have a big army of top stat pyromanes (base level 300 and up) and once you find it you unleash your army of pyromanes to defeat it. The reason why you don’t just use carchas or gigas is cause it has a fire attack that does a TON of damage. And that fire attack will eventually kill your carchas and gigas. Which pyromanes are literally made out of fire so it is immune to fire attacks. If you do everything correctly the boss should be done in like 60 seconds.