Writing out the sex combat behavior...sucks.
It feels too rigid and I don't like it.
The initial sex system I had in Rubedo was basically the same thing I just made, where the PC can orgasm multiple times but they're using different body parts to try and make someone else cum.
So....
Either my stat breakdown needs to change, which I don't really want to do as the PC can simply train up Speed(which controls Stamina) by running around their farm, or I need a different way to handle the PC fucking enemies in combat.
Any ideas/suggestions on how other games do it so I can go look?
Sorry, late to the party here. Busy week.
Fundamentally, you are kind of at a crossroads. Either sex has a big factor in combat, or it's icing on the cake. It seems like you want the combat to be front and center, as the story is mix of adventure, exploration, smex, lore, and of course, fighting the good (or bad) fight.
The inclusion of companions and numerous foes makes outright fucking in combat... tricky. Both to write, and to justify as a leap of logic. Like, if it's one on one, being held down and ravaged, or you yourself doing the ravaging, sure, it makes sense. Null sweat there.
But with the inclusion of multiple actors it starts getting bizarre. Why wouldn't somebody else take advantage, or stab somebody in the soft fleshy bits while the actors are doing the horizontal tango? If you have high charisma you can have a number of allies - does your team stand around holding up scorecards based off performance until you are done? (Actually, the Goblins just might.)
You could put them in a grapple 'state' if being lewded that could be interrupted, perhaps, but again, depending on the companies sparring you run the risk of chain stunning or other frustrating confusion.
Honestly I'd suggest an alternate sex combat system if that's how you want to roll, rather than trying to mash the bits together. I never saw an issue with resolving what happens sexy time wise after the battle anyway.
I'd just expand the fundamentals that make sense. Maxing out the lust in combat makes somebody orgasm; essentially a unique stun effect that renders their defenses pretty much moot. (Hard for a swordsman to land a swing when they are crosseyed and nutting, for example.)
Different classes or techniques could tweak this state, making it more impactful, or even a source of recovery.
Perhaps have a stacking penalty in the combat, so the more you climax, the bigger the tax on your energy grows, as at least in the qsp version losing all the energy resulted in immediate defeat regardless.
'Lust' attacks from Annette, the PC, critters or whatnot can still do their thing (though you'll also have to have a flag checked if something is humanoid and sexable, unless you want to start getting real unique for in combat sex descriptions, which sounds like a nightmare).
A option that a succubus or Annette (or Bill) could employ is the ability for lust damage to be considered physical damage, or deal a portion of it, thereby giving the whole sucking out the soul concept and lore some added weight, as well as giving them some combat potential that isn't merely a sexy status effect.
And again, certain types could be more resistant than others. Or weak. A holy type, monk, or druid would likely be more in tune with their bodies, desires, and resistance than say a warrior, thief, or mage.
Just spitballing here obviously, nothing needs to be taken as gospel.
But if it (sex combat) isn't feeling right, then your best move is probably to tweak it or shelf it until it does what you want.
Edit: Whoops, missed the demo link. I'll check it out later. Probably just invalidated most of the nonsense I just wrote, haha!