Here is the full list of all 47 Persona 5 Strikers achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Activated Showtime.
Earned all Achievements.
Completed the Shibuya Jail.
Completed the Sendai Jail.
Completed the Sapporo Jail.
Completed the Okinawa Jail.
Completed the Kyoto Jail.
Completed the Osaka Jail.
Completed the Jail of the Abyss.
Completed the Tree of Knowledge.
Witnessed the Phantom Thieves' reunion.
Wolf awakened his Persona.
Sophia found strength of heart.
Used Incense.
Performed an All-Out Attack 150 times.
Hit the enemy's weakness 300 times.
Defeated 200 enemies with a phantom dash.
Defeated 10 Treasure Demons.
Defeated the Reaper.
Completed the Inmate Registry.
Maxed out a BOND skill level.
Maxed out all BOND skill levels.
Spent Persona Points to strengthen a Persona's stats.
Performed 50 ambushes.
Trained all Phantom Thieves to level 70.
Cleared all special requests from the Phantom Thieves.
Defeated a Dire Shadow.
Defeated all Dire Shadows.
Obtained all Master Arts for Joker.
Obtained all Master Arts for Skull.
Obtained all Master Arts for Mona.
Obtained all Master Arts for Panther.
Obtained all Master Arts for Fox.
Obtained all Master Arts for Queen.
Obtained all Master Arts for Noir.
Obtained all Master Arts for Sophie.
Obtained all Master Arts for Wolf.
Obtained all Master Arts for all characters.
Completed a request.
Completed 50 requests.
Obtained a total 200 items from the Jails.
Cooked food for the first time.
Cooked 12 types of food.
Bought something during a limited time sale.
Obtained a souvenir for the camper.
Opened 50 treasure chests.
Started a New Game+ on Merciless Difficulty.