Heya :3
I'm great fan of your art and work and I even make a donation of 5$ while downloading the game because the concept is very good and I want to see a full game of it
Now some recommendation and critique about this demo.
1: I think you should add a naked version of psi-master if you unnequip his costume. (btw I beat the game naked too lol) It's a kink/sex game I think you should have the option to see your character naked. And it would be fun to have altered dialogue in the capturing phase with the civil that are feared of you not beacause you are a vilain but a nudist x3
2 : like W3r3 W0lf said in the comment : "Also when confronting F.F. he mention Psi Master had already been beaten by someone, but during the lair tour Psi Master never alluded to that, might want to change the dialogue a bit and make it so P.M. is actually a rookie supervillain, not an experienced one. Might also make his rule/conquer dilemma more believable and a great running gag." I agree with this but if you still want to make psi-master an experienced vilain, you can do like "Perfect home" by citrine and make an intro where Psi-master is like swatted by a hero league or something and encounter a great defeat. That could also serve as a tutorial for the fight phase or even mind control phase if the intro start with a hero already captured and the league swatt psi-master base when you finished brainwashing the captured hero. with that context you can even add heros that were ex-slave of psi-master and came back to their heroic life, for him to brainwash them again >:3.
3 : when it come to brainwashing phase I think it's redundant sadly. its just the same fight over and over again the same one as the capturing phase. For me those phase should be more like a mind dungeon with essentially puzzle, where you learn more about, the hero, his identity, his past, his insecurity (with why not some random encounter and maybe mini-boss even) for then to meet with his free will. Again the fight with the free will should not be the same fight as the first one it should be a different gameplay that fit more with the hypno-kink theme
I see it like a boss lif bar with shields in the middle and one at the end, so two segment that I call, weakening and breaking
the weakening segment is to lower the boss's life bar
I have two idea for the weakening segment
the first one : a "paper rock scissor" game but with a hypno skin the hero saying a sentence wich vaguely indicate wich action he will use for you to choose the right option to counter him
the second : a rythm or a QTE or a simon game (depending of what is possible with the game motor you using) again with a "hypno skin".
those game would lead to the second segment, the breaking : The hero's free will say a sentence and you have to counter it with the information you collected during the whole mind dungeon. Choosing the good argument break one of the shield leading you to an another weakening phase. choosing the bad argument make you loose life and make the free will recover a bit of life leading you to the previous weakening phase.
repeat those two segment every time you want until all the hero's free will shields break :3
and at the end when you choose the fate of the hero you should add some text describing the brainwashing because we are here for the hypno horny of course :3