Here is the full list of all 19 Tales of Kenzera: ZAU achievements.
Complete Act 4
Unlock all Codex entries
Complete Act 3
Collect all Echoes
Collect all Trinkets
Upgrade all Skills
Complete all Spirit Rituals
Unlock all Spirit Segments
Unlock all Trinket Slots
Complete all Reflections
Unlock all Abilities
Complete Act 2
Survive the Kikiyaon chase
Kill 4 enemies with a single Lunar Blast
Perfect Recharge 10 times
Kill 4 enemies with a single Supernova
Complete Act 1
Equip a Trinket
Begin Zau's journey with Kalunga