Here is the full list of all 50 Bayonetta achievements. It takes around 35-40 hours to unlock all of the achievements on Windows.
Complete all Alfheim portals.
Discover all Alfheim portals.
Earn Platinum Medals during Verse 1 and Verse 2 of Chapter 14.
Discover all of the Umbra Witches' final resting places.
Complete half of all Alfheim portals.
Collect all of Antonio's Notes.
While never setting foot on the ground, grab enemies 10 times using Kulshedra.
Counter three enemy attacks consecutively with the Moon of Mahaa-Kalaa equipped.
Complete all Chapters on ∞ Climax difficulty.
Freeze 20 enemies while wearing Odette.
Obtain seven complete Angelic Hymn Gold LPs.
Create 20 Concoctions.
Taunt and defeat five plus angered enemies while taking no damage. Gaze of Despair may be equipped.
Execute 20 Wicked Weave attacks while using Dodge Offset.
Kill 20 enemies using only Iai-Jutsu with Shuraba. (Iai-Jutsu performed by holding the Y button.)
Complete Chapters 14 through the Epilogue on Hard difficulty.
Complete all Chapters on Hard difficulty.
Complete Chapters 12 and 13 on Hard difficulty.
Kill an enemy by jumping on top of them.
Complete Chapters 8 through 11 on Hard difficulty.
Purchase all techniques.
Destroy all the tentacles that drop down together during in single sequence in Chapter 9.
Complete Chapters 5 through 7 on Hard difficulty.
Counter 10 enemy attacks with the Moon of Mahaa-Kalaa equipped.
Complete Chapters 1 through 4 on Hard difficulty.
Discover half of all the Umbra Witches' final resting places.
Dodge the runaway streetcar during Chapter 2.
Avert 10 enemy attacks with the Moon of Mahaa-Kalaa equipped.
Complete all Chapters on any difficulty.
Complete Chapters 14 through the Epilogue on Normal difficulty.
Complete all Chapters on Normal difficulty.
Defeat Father Balder on any difficulty.
Execute 50 Torture Attacks.
Engage Witch Time successfully 10 times consecutively.
Defeat Sapientia on any difficulty.
Complete Chapters 12 and 13 on Normal difficulty.
Defeat Iustitia on any difficulty.
Complete Chapters 8 through 11 on Normal difficulty.
Purchase three new techniques.
Defeat Temperantia on any difficulty.
Complete Chapters 5 through 7 on Normal difficulty.
Defend Cereza during the out of body experience, ensuring she takes no damage.
Obtain three complete Angelic Hymn Gold LPs.
Earn 10 Platinum Medals. Must be earned in 10 different battles.
Defeat Fortitudo on any difficulty.
Complete Chapters 1 through 4 on Normal difficulty.
Execute a Wicked Weave attack while using Dodge Offset.
Engage Witch Time successfully 10 times.
Complete the Vestibule.
Execute a Torture Attack.