Full list of all 51 Aragami achievements. It takes around 15-20 hours to unlock all of the achievements in the base game on Windows.
The base game contains 39 achievements, and there is 1 DLC pack containing 12 achievements.
Die. Again. And again.
Concatenate multiple stealth kills
Get killed by an arrow while throwing a 'Kunai'
Perform an aerial kill from a 10m height
Perform a Ceiling Kill
Make a guard suspicious 3 times in a row
Unlock all Skills
Complete Chapter 13
Obtain all 'Yurei' medals
Obtain all 'Kami' medals
Obtain all 'Oni' medals
Complete Chapter 12
Find all Scrolls
Complete Chapter 11
Use 'Shinen' to swallow 3 guards at the same time
Use an explosive light to kill a guard
Complete Chapter 10
Die while performing a stealth kill
Complete Chapter 9
Complete Chapter 8
Perform a Ledge Kill
Perform your first Shadow Kill
Complete Chapter 7
Complete Chapter 6
Kill 100 enemies
Completer Chapter 5
Complete Chapter 4
Summon 100 shadows
Destroy a Light Orb
Complete Chapter 3
Obtain a 'Oni' medal
Skip a cinematic
Complete Chapter 2
Obtain a 'Kami' medal
Find a Scroll
Perform 100 Shadow Leaps
Unlock a Skill
Complete Chapter 1
Obtain a ‘Yurei’ medal
Complete Nightfall: Chapter I
Complete Nightfall: Chapter II
Complete Nightfall: Chapter III
Complete Nightfall: Chapter IV
Recover all Nisshoku Daggers
Kill two enemies at once with the help of Twin Shadow (Single Player)
Kill 4 or more enemies at once with the Explosive Kunai
Obtain all 'Kami' medals in 'Nightfall'
Obtain all 'Oni' medals in 'Nightfall'
Obtain all 'Yurei' medals in 'Nightfall'
Blind 4 or more enemies with a Shadow Grenade