It will not be treasure adventure but a dark souls like game without it's difficulty.
Are you thinking in an side scrolling game or a 3d one? I loved your 2d games and would be amazing to see a "soulslike", Could you think about put a skill for the girls to lure the monsters into sex?
It would be amazing to see 1 scene of rape and 1 of reverse rape. I like your ideas of making combo of monster gang raping de female.