Unexpectedly, "the elevator" was a pretty hard and extremely annoying part. The few unavoidable battles that you can't escape from are like boss fights... and on top of that, I had to let my main-party characters die before finishing the battles in order to prevent anyone from getting above level 30. That's what made it so frustrating.

Anyways... I've finally got to the very end of this challange... and I've fought the final boss once so far. Everyone in my main party is at exactly level 30. Ziggy and MOMO are level 28 and 29.

Albedo is actually pretty easy. Or... atleast he was that one first time I fought him. Now, Sophie Peithos is a different story. At first, it seemed extremely easy. Even easier than Albedo! Then, Sophie Peithos summoned those self-destruct freaks... but the battle was still easy! But THEN, Sophie Peithos summoned those 2 insect-like gnosis servants... and the battle suddenly become really hard! 300 dammage + Ether Atk Down against all the characters hurts. I hardly got any time to attack because i was too busy healing all the time. After a while, I managed to kill 1 of those 2 freaky bugs, though. And what happens? Black Omen! Schram! Bam! Crash! Game Over!

Black Omen is an instant-game over attack as long as your party isn't fully healed and defending. Since you never get warned (there's no charge up turn or anything), you'll probably need to have atleast 1 character fully healed and defending whenever Sophie Peithos gets a turn during the later part of the battle. Ouch.