Here is the full list of all 43 BlazBlue Entropy Effect achievements.
Complete [Night City] for the first time.
Complete [Research Base] for the first time.
Play [Mind Training] with 2 Legacy Skills equipped.
Get a Phenomenon Fragment for the first time.
Complete [Ruins] for the first time.
Complete [Sakura City] for the first time.
Defeat the Elite Sample in [Space Omega] for the first time.
Complete [Space Omega].
Complete round 1 in a [Mind Challenge].
Complete round 2 in a [Mind Challenge].
Complete round 3 in a [Mind Challenge].
Unlock 7 Prototypes.
Have selected 50 unique Potentials
Have selected 100 unique Potentials
Having selected 100 unique Tactics
Having selected 200 unique Tactics
Defeat 100 Elite Samples in total.
Spend 20000 Exchange Points at [Exchange Space] in total.
Having selected all Fire Tactics.
Having selected all Ice Tactics.
Having selected all Electricity Tactics.
Having selected all Toxin Tactics.
Having selected all Umbra Tactics.
Having selected all Light Tactics.
Having selected all Blade Tactics.
Having selected all Generic Tactics.
Complete [Mind Training] without inheriting abilities from your Evotypes.
Implant 6 Mind Crystals.
The best Evotype Rating reaches 900.
Upgrade your mind to Lv.60.
Choose 10 unique Entropy Effects in a single Mind Training run.
Complete Space Omega with at least 50 Entropy.
Complete any phase of [Mind Training] without taking damage.
Reach the end of the story.
Complete [Mind Training] without spending Exchange Points.
Complete [Mind Training] with 7 Potentials equipped.
Carry more than 300 Exchange Points when [Mind Training] is over.
As Ragna, defeat Susanoo.
As Hakumen, lose to Susanoo.
As Kokonoe, lose to Arakune.
Obtain a [Potential] in [Sortitio Space].
Obtain [Better Luck Next Time] in [Sortitio Space].
Access [Sortitio Space] 5 times in a single [Mind Training] session.