Ok, that was a pretty good one. Very much a "take steps so you can one turn every single fights" type of game, but even then I didn't manage to kill the ultimate challenge boss. I think I could only bring him to half health or so before that boss more or less decided to oneshot me.
There are also a single quest and a couple other bosses I didn't manage to kill, and I suspect it's due to not having lust high enough to get in a specific map?
If anyone did do those things, I'd appreciate knowing the steps they took there.
EDIT: nevermind, I had missed a hero fight in a lab that gives a fairly useful auxilliary, and with that and being careful I managed to kill the ultimate bonus boss... and then, for the lulz I increased the lust so I could do the bonus quest I couldn't do before, which /also/ gave a utterly broken main armour, and that alone probably more than triple the power I had and I probably could have one-turned the ultimate bonus boss.