Celeste...
	Kyu...
	Momo...
	Various Steam Achievements...
	Venus...

Give Kyu your "Dirty Magazine" after unlocking her to gain the "Strange Object". Attempt to give this to someone at the beach during the night.

Successfully have a woman spend the night over.

Buy the "Goldfish" item from the store when possible, then attempt to discard them during the day.

Achievement	How to unlock
Alpha	Give Kyu ALL the pairs of panties after she asks for them.
Alpha Champ	Successfully complete 5 dates while in Alpha Mode.
Alpha Master	Successfully complete 10 dates while in Alpha Mode.
Ayy Lmao	Unlock the secret character Celeste.
Bestiality	Unlock the secret character Momo.
Buying Love	Spend the night with ALL the girls without talking with any of them.
DTF: Date the Fairy	Unlock the secret character Kyu.
Heavenly Body	Unlock the secret character Venus.
Lucky Loser	Spend the night with 3 girls without upgrading any of your traits.
Make the Move	While on a date, earn 2000 or more Affection in a single move.
Money Bags	Max out both your Munie and Hunie.
Pickup Artist	Spend the night with a girl within 4 days.
Pickup Legend	Spend the night with ALL the girls within 18 days.
Quickie	Successfully complete a date with at least 20 Moves remaining.
Smooth as F*ck	Spend the night with ALL the girls without failing a single date.
Sobriety	Spend the night with ALL the girls without giving any of them an alcoholic drink.
There May Be Hope	Have your first successful date with a girl.
Truest Player	Spend the night with the goddess of love.
V-card Revoked	Spend the night with a girl for the first time.
Zero Life	Earn a 100% completion rate.

Have every other non-secret character spend the night over.