Here is the full list of all 63 Dead or School achievements.
The attack power of your weapon is over 10,000
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Your Launcher skill is over 20
Weapons have been reinforced 100 times
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Your life is over 1500
The attack speed of your weapon is over 1,000
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Your stamina is over 1500
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Completed Yoshitaka's mission in Asakusa
The amount of money spent on shopping is over 30,000 yen
Weapon has been modified 100 times
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Repel the corrupted Yakuza at Shinjuku Kabukicho
Your Machine gun skill is over 20
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3 types of drones summoned
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Your money is over ￥10000
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Weight limit is over 200
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Defeated a boss at Ichigaya station
Collected all exhibitions
Your sword skill is over 20.
Completed Daiba’s request in Ichigaya
Rescued refugees in Ichigaya
One-shot killed 5 enemies at a time
Weapon has been enforced to the maximum.
Defeated a boss at Harajuku station
Completed Yurika’s request in Harajuku
50 near death situations survived
Attacks evaded 100 times
The number of enemies killed by launcher is over 100.
Kill an enemy by pushing it into a hole
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Defeated a boss at Shinjuku station
Kill an enemy with an aura
The number of enemies killed by machine gun is over 100
Completed Noriaki’s request in Shinjuku
Rescued refugees in Shinjuku
Completed Yurika’s request in Shinjuku
Found a rare shop
Kill a rare enemy
The number of enemies killed by swords is over 100
Purchase an item at the shop for the first time
Rescued refugees for the first time
Obtain a souvenir for the first time
Modified a weapon for the first time
Reinforced a weapon for the first time