Here is the full list of all 36 Projekt: Passion - Season 1 achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Unlock all codex entries
Finish part 5
Make 75 aggressive choices
Die on Tollorix
Make 50 aggressive choices
Find all deaths in part 1
Make 25 aggressive choices
Die twice on Aeon Station
Die by interrogation
Make 75 witty choices
Die on Corth
Find all deaths in part 3
Make 50 witty choices
Find all deaths in part 2
Make 25 witty choices
Finished the game
Flirt three times with Ashe
Finish part 6
Win Elysra's question game
Flirt three times with Elysra
Make 75 friendly choices
Finish part 4
Flirt once with Ashe
Flirt three times with Emily
Finish part 3
Flirt three times with Kaylee
Flirt once with Emily
Flirt once with Elysra
Make 50 friendly choices
Finish part 2
Flirt once with Vesnia
Finish part 1
Flirt once with SAndrA
Make 25 friendly choices
Flirt once with Kaylee
Make a dialogue choice