Yes, there is (i know it's late but it's possible)
-You need to kill Bacos in 3 turns, which is possible without cheats
-To do so, i killed Lemur on first encounter(it's easily doable without cheats)
-You also need to not claim reward from Dryad's bounty (unless Lilim will leave party)
-Start the Ily's quest, you only need her in party, no more (she must cast SP Heal on Lana, to use Thousand Curse Slash to oneshot Bacos in 3rd turn)
-Lilim should have 7-8 movement and ~40 magic power to break the door in 1st turn, in the 2nd turn she must press the button before other characters
-Lana should have 8-9 movement and strength enough to one shot Bacos with the Thousand Curse Slash skill. Also you need to one shot 1 ogre that on the way to Bacos (you need to be right next to boss, Thousand Curse Slash have only 1-block reach)
-And lastly, you need to survive on Lana. After you kill one of the ogres on the way to Bacos, you will suffer several hits from ogres and mages
I will attach some pictures below for better understanding. That's how you can skip this unpleasant scene (i am bad at guides but still hope it will help someone)
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