Here is the full list of all 36 UPPERS achievements.
Clear Act 3 Side Story.
Clear Act 3.
Get 30 Love Letters.
Clear Act 2.
Watch every reward cutscene for 1 Queen.
Clear Act 1.
Defeat Chapter 1 boss with a finisher.
Get "Ino-Shika-Cho" in Panty Slots.
Change clothes in the ONEPOINT shop for the first time.
Activate map gimmicks/special actions 100 times.
Defeat a boss with a Friendship Upper Rush.
Get a match in Panty Slots.
Activate Panty Slots.
Defeat a boss with an Upper Rush.
Perform a Friendship Upper Rush.
Successfully perform an Upper Rush.
Perform a Rise Up.
Get 1 Love Letter.
Defeat 1 grunt.
Lift Shopping District's Queen skirt.
Clear Act 4.
Clear Act 5.
Clear Act 6.
Clear End Chapter.
Reach maximum (LV5) Voltage.
Get 50 Love Letters.
Unlock all playable characters.
Defeat all bosses on the streets.
Use all map gimmicks.
Watch every reward cutscene for 4 Queens.
Get "World Expo" in Panty Slots.
Watch every reward cutscene for all Queens.
Get 100 Love Letters.
Clear all Panty Slot combinations.
Clear the last Chapter without taking any damage.
Obtain all available trophies.