Here is the full list of all 36 UPPERS achievements.
Clear Act 1.
Defeat Chapter 1 boss with a finisher.
Defeat a boss with a Friendship Upper Rush.
Get "Ino-Shika-Cho" in Panty Slots.
Perform a Friendship Upper Rush.
Activate map gimmicks/special actions 100 times.
Defeat a boss with an Upper Rush.
Change clothes in the ONEPOINT shop for the first time.
Successfully perform an Upper Rush.
Perform a Rise Up.
Get 1 Love Letter.
Get a match in Panty Slots.
Activate Panty Slots.
Defeat 1 grunt.
Lift Shopping District's Queen skirt.
Get 30 Love Letters.
Clear Act 2.
Clear Act 3.
Clear Act 3 Side Story.
Clear Act 4.
Clear Act 5.
Clear Act 6.
Clear End Chapter.
Reach maximum (LV5) Voltage.
Watch every reward cutscene for 1 Queen.
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.