Oh boy, this fight is arguably the hardest in the game, even more so than
. If you had trouble with the Theseus fight before, this one will be tricky.
In order to fight Extreme Measures Theseus, you’ll have to set EM in the pact of punishment to level 3 (I believe this sets the heat to 6 by itself, if you’re looking to find an Erebus gate, or claim skellys first prize).
This also means that not only do you have to clear the new elysium fight, but to even get there you’ll have to clear the remixed bosses of Tartarus and asphodel as well.
The Tartarus fight
and the asphodel fight
Like all the other extreme measure boss fights, it remixes the boss in a new challenging way. When you first enter this fight, you’ll notice Theseus
. His move set until you get him to half health has been completely changed, and he will not only shoot more ranged attacks at you, but charge around the room and keep up with your dodging more. Asterius has updated armor too, but his move set more or less is the same. Theseus only has his new move set until you get him to half health, in which he behaves as he normally would without EM3 for the rest of the match
The best advice for beating these two is to upgrade yourself as much as you can through the mirror, keepsakes, chthonic companions, weapon aspects, and even by using the olympians keepsakes to build a boon run that suits you. For gameplay during the actual fight, I would recommend focusing Theseus as much as you can. Allowing him to run around with his alternate move set, while also juggling Asterius rushing you down is a death sentence. The quicker you can take him to half, the better your chances of victory are.
Other than that, never stop spamming the dodge button and use every ounce of damage output you can to take these two down. Good luck, may the gods bless you!
Again, DO NOT feel discouraged if you’re getting to this fight and losing, it’s genuinely one of the hardest fights in the entire game.