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