Here is my 100% Achievement guide with full walkthrough (No skipping or unnecessary editing parts out).
This is a game you have to follow specifically in order to get all 4 endings.
You do have to be fast enough as well because there are events that can happen before you get there if you take your time with certain things etc
But do not let it put you off, it is a fantastic game and all timestamps for achievements can be found below the video or on the comment section on YT :)
Hope this helps & Enjoy!
Intro - 0:00
Game Start - 1:30
1. Maverick - 5:20
2. Smooth Talker - 5:55
Graffiti 1/10 - 6:15
Graffiti 2/10 - 6:25
Graffiti 3/10 - 7:10
Grafitti 4/10 - 7:20
Graffiti 5/10 - 8:10
Graffiti 6/10 - 8:30
Graffiti 7/10 - 8:45
Graffiti 8/10 - 8:55
Graffiti 9/10 - 9:00
3. Unhygenic - 9:10
4. Trickster - 9:25
Graffiti 10/10 - 10:35 (Achievement Didn't Unlock For Me Here)
5. Tourist - 13:55
6. Allergic - 14:05
7. Golden Archer - 16:25
8. Striker - 18:15 (Unlocks at 21:35)
9. Survivor - 27:25
Underworld Explorer 1/4 - 27:45
Graffiti 11/10 - 32:35
10. Avid Reader - 32:35
11. Bloodless Shadow - 36:10
Underworld Explorer 2/4 - 38:10
12. Lion Tamer - 41:30 (Unlocks at 43:25)
Underworld Explorer - 43:50
13. High Diver - 45:10
14. Archaeologist - 49:30
15. Nimble - 54:25
16. Looper - 58:00
17. Medic - 1:00:15
18. Counsellor - 1:05:25
19. Match Maker - 1:08:25 (Unlocks at 1:11:50)
20. Treasure Hunter - 1:09:30
Underworld Explorer 4/4 - 1:09:30
21. Underworld Explorer - 1:09:30
22. Liberator - 1:18:10
23. Herculean - 1:20:15
24. Silver Tongue - 1:20:40 (Unlocks at 1:24:20)
25. Law Abiding Citizen - 1:25:00
26. Minimalist - 1:25:15
27. The Oracle - 1:26:40
28. The Canon Ending - 1:27:30
29. Psycho - 1:28:40 (Unlocks at 1:32:50)
30. Italian Plumber - 1:34:50 (Unlocks at 1:36:00)
31. Sleuth - 1:36:15
32. Dead Shot - 1:37:15
33. The One That Got Away - 1:40:40
34. Grave Robber - 1:43:25
35. The Ones That Got Away - 1:50:20
36. Fibber - 1:51:45
37. Callous - 1:53:45
38. Kleptomaniac - 1:57:10
39. Super Looper - 1:58:35
40. The Many Shall Suffer - 2:00:30