Generally, you get some idea of what each stat does by reading the hints of the guards in the guard room and the cafeteria (once unlocked) and reading the text in the "training" edict section for each stat path. Now for a slut playthrough you want to engage into sex fast each battle, deal heavy plasure damage without cumming each round. So for pleasure damage you'll want charm which increases pleasure damage overall and dexterity which increases pleasure damage with sex actions (both if you engage them or vice versa). To stop you from losing to sex, you'll need a lot of endurance to decrease the pleasure increase and energy to "survive" the eventual orgasms. A must-have accessory is the one that increases energy, because it gives you energy regen. Depending on how much control you want you can go for stamina (to be able to use sex skills) and/or mind (for the skills that regen energy and you can increase desires at the start of combat to get to sex faster).
Thus, in regards to leveling you just only use dex attacks and at some point in the battle let it happen