Here is the full list of all 28 Trek to Yomi achievements.
Complete the game
Complete the game with the path of love
Finish Chapter 6
Perform 50 finishers
Finish Chapter 5
Finish Chapter 4
Kill 3 enemy at once with ozutsu
Kill 10 enemies without using any weapon
Finish Chapter 3
Finish Chapter 2
Execute 50 successful counters
Finish Chapter 1
Collect first Upgrade
Kill 1st enemy
Collect all Upgrades
Find all lore collectibles
Complete the game in Ronin mode
Complete the game with the path of fury
Complete the game with the path of duty
For killing the boss in chapter 3
Kill Sadatame without getting hit
Kill Kagerou Shogun without getting hit
Kill Aiko Demon without getting hit
Kill Sanjuro Demon without getting hit
Kill Hiroki Demon without getting hit
Kill Kagerou Demon without getting hit
Complete the game on Kensei mode
Complete a whole chapter without dying and using a shrine