Didn't played in recent version, are added STDs realistic or fictional? What about adding some silly imaginary STDs, Rachel routinely fucked by mutated creatures and they can give her monster versions of STDs.
Hyperlactosis, Rachel starts heavily lactate and constantly drenching her clothes, nipples become bigger and she's weaker to breast stimulation, also milk fountains when orgasming.
Vulvoplumposia, her pussy gets really swollen and obscene, like if she used vacuum pump too much, it gives her big slutty cameltoe and hindering movement in fights, lowering her evasion chance.
Cunt/butt parasites that constantly produce copious lubricant, making her always look like horny bitch in heat, also it can be used in gameplay, when Rachel intentionally tries to get infested to "conquer" some especially big monster dick.
Canismeretrix, Rachel beginning to feel constant arousal but masturbation not helping, she starts to have intrusive thoughts that she needs to go in forest, there dog attacks her and she stunned by strong lust, Rachel can only tease during fight and after losing she eagerly let dog breed her and having amazing orgasm.
After it she goes to doctor to understand her own behavior, doctor explains that mutated species have very low population and to survive some of them developed evolutional mechanism that makes females addicted to copulation with them. Each non-sentient monster can have its own addiction STD but Rachel can be infected by only one at a time, to avoid conflicts.
Also it can be used in gameplay, when Rachel trapped in location full of monsters and she has STD addiction to them, so she has to escape it without fight, using stealth, solving puzzles and enthusiastically fucking her own way out.
Hyperlactosis, Rachel starts heavily lactate and constantly drenching her clothes, nipples become bigger and she's weaker to breast stimulation, also milk fountains when orgasming.
Vulvoplumposia, her pussy gets really swollen and obscene, like if she used vacuum pump too much, it gives her big slutty cameltoe and hindering movement in fights, lowering her evasion chance.
Cunt/butt parasites that constantly produce copious lubricant, making her always look like horny bitch in heat, also it can be used in gameplay, when Rachel intentionally tries to get infested to "conquer" some especially big monster dick.
Canismeretrix, Rachel beginning to feel constant arousal but masturbation not helping, she starts to have intrusive thoughts that she needs to go in forest, there dog attacks her and she stunned by strong lust, Rachel can only tease during fight and after losing she eagerly let dog breed her and having amazing orgasm.
After it she goes to doctor to understand her own behavior, doctor explains that mutated species have very low population and to survive some of them developed evolutional mechanism that makes females addicted to copulation with them. Each non-sentient monster can have its own addiction STD but Rachel can be infected by only one at a time, to avoid conflicts.
Also it can be used in gameplay, when Rachel trapped in location full of monsters and she has STD addiction to them, so she has to escape it without fight, using stealth, solving puzzles and enthusiastically fucking her own way out.