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