Here is the full list of all 40 Persona 5 Tactica achievements.
Obtained all achievements.
Completed the game.
Filled all entries in Persona Compendium.
Earned all awards.
Watched all hideout Talk conversations.
Reached max level.
Accumulated 666,666 yen.
Fused Satanael.
Completed all quests.
Purchased 50 unique weapons.
Traversed 10,000 squares.
Reunited the Phantom Thieves.
Dealt 2,000 damage in a single attack.
Played through 500 turns.
Triggered One More 200 times.
Performed 100 shooting attacks.
Performed 100 melee attacks.
Used Persona skills 100 times.
Used unique skills 50 times.
Performed an All-Out Attack 50 times.
Performed a Baton Pass 10 times.
Learned the final skill in a skill tree.
Witnessed a fusion accident.
Purchased 10 weapons.
Gained the ability to fuse Personas.
Disassembled weapons 10 times.
Fused weapons 10 times.
Defeated the first Kingdom's boss.
Defeated the second Kingdom's boss.
Defeated the third Kingdom's boss.
Defeated the fourth Kingdom's boss.
Inflicted Sleep using fusion weapons 20 times.
Inflicted Despair on enemies with Joker 20 times.
Inflicted Shock on enemies with Ryuji 20 times.
Swept away enemies with Morgana 20 times.
Inflicted Burn on enemies with Ann 20 times.
Inflicted Freeze on enemies with Yusuke 20 times.
Pulled enemies into Vortex with Makoto 20 times.
Hypnotized enemies with Haru 20 times.
Inflicted Forget with Erina 20 times.