Stats

Basics
Lust Doll has eight core stats (Strength, Mystic, Nimble, Resilience, Speech, Insight, Senses and Erotic), which they can use to survive in this dangerous world.

By default, the player starts with every stat set to 1 (unless you use stat modifying tool available during character creation), but they can be gradually increased as you continue to use them. Almost everything you ever do with them gains you experience points for that stat, and when you accumulate a certain amount, that stat gets permanently increased; however, each new level requires more and more experience to train the stat further. Certain Status Effects can affect your stats in a positive or negative way, as long as you have them applied; their effects stacks, but only the default value gets taken into account when determining the bonus. There's no way to decrease the stat permanently outside of starting New Game Plus with modified stats.

You can see your stats to the right from your character portrait. If they are coloured white, it means what no modifiers are applied, or, if multiple are applies, what their total effect is zero. If they are coloured green, it means what the stat is increased from default value, and if it's red, it means what the stat is penalised. No effect may drop the stat below 1, but the maximum value is unrestricted.

While playing the game, you would often encounter the stat checks. There are two types, passive and active ones.
 * Passive checks have certain amount of the specific stat as prerequisite for passing, but as long as you fulfil the requirements, all you need is to click on the button.
 * Active checks have certain chance to pass the check, which gradually increases as you increase that specific stat. Unlike first type, you can fail them, with consequences ranging from merely annoying to instant game over.

To avoid unnecessary spoilers, plot-specific skill checks are not listed.

Strength (Str)
Lust Doll's physical strength. Generally, the higher it is, the stronger you hit.

Effects:
 * Affects physical damage. Each point of Strength increases minimum and maximum damage by 1.

Can be trained at:
 * 24 Hr Get Fit!

The following status effects boosts this stat:
 * Invigorated (+10%)
 * Energetic (+20%)

The following status effects penalise this stat:
 * Pregnant: Late Stage (-20%)
 * Pregnant: Slime Monster (-20%)
 * Ass Pregnant: Meat Parasites (-20%)
 * Tired (-20%)
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Hangover (-20%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)

Mystic (Mys)
Lust Doll's magical abilities.

Effects:
 * Affects mana reserve. Each point of Mystic increases maximum mana by 3. All spells consume some mana on use, and can't be used with insufficient amount of mana.
 * Affects spells' physical damage.
 * Some spells have a certain level of Mystic as a prerequisite for being learnable.
 * Allows to initiate the battle with Fairies.

Can be trained at:
 * Succubus Tower, in the Training Hall.

The following status effects boosts this stat:
 * Cumflation (+10%)
 * Nude (+10%)
 * Pregnant: Late stage (+20%)
 * Pregnant: Slime Monster (+20%)
 * Ass Pregnant: Meat Parasites (+20%)

The following status effects penalise this stat:
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Hangover (-20%)
 * Can't See (-25%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)

Nimble (Nim)
Lust Doll's natural agility.

Effects:
 * Affects your chance to break free when grabbed by the enemy in battle.
 * Affects your chance to successfully escape from battle. Default chance is 50+(10*Nim)%, maxing out at 5 Nimble.
 * Some enemies have lower default chance, and thus require higher stat to max out.
 * Some encounters, mainly the boss battles, can't be run from.
 * Allows to safely avoid Slime Monster, Highwayman and Wildcat without fighting them.

Can be trained at:
 * 24 Hr Get Fit!

The following status effects boosts this stat:
 * Energetic (+10%)
 * Alert (+10%)
 * Slimy (+25%)
 * Slimy (Meat Parasites) (+25%)

The following status effects penalise this stat:
 * Pregnant:Late stage (-10%)
 * Pregnant: Slime Monster (-10%)
 * Ass Pregnant: Meat Parasites (+10%)
 * Cumflation (-20%)
 * Tired (-20%)
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Drunk (-20%)
 * Hangover (-20%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)

Resilience (Res)
Lust Doll's natural stamina and ability to resist pain.

Effects:
 * Affects your stamina reserve. Your maximum stamina is $(Res⁄2)^{2}$ rounded down. The more stamina you have, the more you can spend before being tired, and the more punishment you can withstand before fainting in battle. Being low on stamina would disable most training options, and ability to run from battle, as well as make you much weaker in battle.

Can be trained at:
 * 24 Hr Get Fit!

The following status effects boosts this stat:
 * Sated (+10%)
 * Invigorated (+20%)

The following status effects penalise this stat:
 * Nude (-20%)
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Hangover (-20%)
 * Slimy (-25%)
 * Slimy: Meat Parasites (-25%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)

Speech (Spe)
Lust Doll's rhetoric and diplomacy skills.

Effects:
 * Allows to safely avoid Bandit Girl.
 * Affects income earned from shifts in the Roxie's Diner.

Can be trained at:
 * Roxie's Diner. (+3 per shift, 4 shifts a day maximum)
 * College, the social class (+20 per class, at the cost of 100 )

The following status effects boosts this stat:
 * Relaxed (+10%)
 * Sated (+10%)
 * Tipsy (+20%)

The following status effects penalise this stat:
 * Cumflation (-10%)
 * Indecent (-10%)
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Drunk (-20%)
 * Hangover (-20%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)
 * Can't Speak (-50%)

Insight (Ins)
Lust Doll's natural insight and ability to find non-standard solutions.

Effects:
 * No direct effects.

Can be trained at:
 * Succubus Tower, in the Library. Increases lust each time you pick that option, allowing to accumulate maximum +21 before requiring to "release the steam".
 * College, the Biology class (+20 per class, at the cost of 100 )

The following status effects boosts this stat:
 * Tipsy (+10%)
 * Sated (+10%)
 * Relaxed (+20%)

The following status effects penalise this stat:
 * Indecent (-10%)
 * Cumflation (-10%)
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Drunk (-20%)
 * Hangover (-20%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)

Senses (Sen)
Lust Doll's natural ability to sense danger, and notice something well-hidden.

Effects:
 * At certain skill levels, allows to see hidden objects without going close to them.
 * Certain new locations which can be found when moving between locations require to pass specific Senses check first before being finally discovered.
 * Affects the chance of successfully catch something when fishing.
 * Allows to initiate the battle with Wildcat without him ambushing and grabbing you from the start.

Can be trained at:
 * Fishing is slow, but stable source of Senses training, always giving +1 exp to that stat per attempt.

The following status effects boosts this stat:
 * Nude (+10%)
 * Alert (+20%)

The following status effects penalise this stat:
 * Tired (-20%)
 * Highly Aroused (-20%)
 * Very Sleepy (-20%)
 * Hangover (-20%)
 * Can't See (-25%)
 * Desperately Aroused (-50%)
 * Deathly Sleepy (-50%)

Erotic (Ero)
Lust Doll's natural seducing skills, which they can use to force their enemies to reconsider their intentions.

Effects:
 * Affects lust damage dealt by player. Only maximum damage gets increased, minimum damage is always 5.
 * Affects Draining Kiss spell, increasing its lust damage.
 * Affects income from doing the shows in the Gentlemen's Club.

Can be trained at:
 * Gentlemen's Club in the Slums (+3 per show)
 * Succubus Tower, at the Class (+15, once per day)

The following status effects boosts this stat:
 * Indecent (+10%)
 * Ass Pregnant: Meat Parasites (+10%)
 * Hypersensitive Nipples (+10%)
 * Highly Aroused (+20%)
 * Desperately Aroused (+50%)

The following status effects penalise this stat:
 * Cumflation (-20%)
 * Very Sleepy (-20%)
 * Hangover (-20%)
 * Deathly Sleepy (-50%)

Trivia

 * Prior to the r.20 update, Resilience was called "Body", and Insight was called "Knowledge".