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