No missable achievements (plus 51 unknown)
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Complete Chapter 1
Find a Scroll
Obtain a ‘Yurei’ medal
Unlock a Skill
Perform 100 Shadow Leaps
Complete Chapter 2
Obtain a 'Oni' medal
Complete Chapter 3
Destroy a Light Orb
Kill 100 enemies
Complete Chapter 4
Make a guard suspicious 3 times in a row
Summon 100 shadows
Completer Chapter 5
Obtain a 'Kami' medal
Complete Chapter 6
Concatenate multiple stealth kills
Perform your first Shadow Kill
Complete Chapter 7
Perform a Ledge Kill
Complete Chapter 8
Complete Chapter 9
Complete Chapter 10
Complete Chapter 11
Complete Chapter 12
Complete Chapter 13
Use 'Shinen' to swallow 3 guards at the same time
Perform an aerial kill from a 10m height
Use an explosive light to kill a guard
Get killed by an arrow while throwing a 'Kunai'
Unlock all Skills
Perform a Ceiling Kill
Find all Scrolls
Complete Nightfall: Chapter I
Obtain all 'Yurei' medals
Obtain all 'Kami' medals
Complete Nightfall: Chapter II
Obtain all 'Oni' medals
Complete Nightfall: Chapter III
Complete Nightfall: Chapter IV
Kill the Alchemist's messenger
Kill two enemies at once with the help of Twin Shadow (Single Player)
Kill 4 or more enemies at once with the Explosive Kunai
Blind 4 or more enemies with a Shadow Grenade
Obtain all “Yurei” medals in “Nightfall”
Obtain all “Kami” medals in “Nightfall”
Obtain all “Oni” medals in “Nightfall”
Recover all Nisshoku katanas