Here is my 100% Achievement guide with timestamps :)
Hope this helps :)
Intro - 0:00
Puzzle 1/16 & 1. Passer By - 1:45
2. Observant - 3:00
3. Dragon Tamer - 5:45
Ghost 1/8 - 9:20
4. The Alchemist - 10:40
5. Nearing Deadline - 12:05
Wand 1/16 - 13:10
6. Third Times The Charm - 13:50
Puzzle 2/16 - 16:15
Wand 2/16 & Puzzle 3/16 - 17:15
7 & 8. Speedy Hand & Fast Pace - 18:50
9. Rock The Boat - 20:15
10. The Hunter - 21:30
Ghost 2/8 - 26:50
Puzzle 4/16 - 27:10
Wand 3/16 - 30:45
Wand 4/16 - 33:35
11. Worthy - 38:30
Puzzle 5/16 - 39:40
Puzzle 6/16 - 46:15
12. Unmistakable - 46:50
Puzzle 7/16 - 48:10
Wand 5/16 & Ghost 3/8 - 52:45
Wand 6/16 - 53:30
Wand 7/16 - 53:45
13. Werewolf Hunter - 58:05
Ghost 4/8 & Puzzle 8/16 - 59:20
Wand 8/16 - 1:01:35
14. Definetely Not Lost - 1:04:40
Puzzle 9/16 & Ghost 5/8 - 1:07:50
Wand 9/16 - 1:11:20
Wand 10/16 - 1:13:30
Puzzle 10/16 - 1:14:50
Puzzle 11/16 - 1:20:35
Wand 11/16 - 1:21:10
15. Hidden Knowledge & Wand 12/16 - 1:24:30
Puzzle 12/16 & Ghost 6/8 - 1:28:55
Wand 13/16 & Puzzle 13/16 - 1:31:50
Ghost 7/8 - 1:34:00
16. Unmasked & Wand 14/16 - 1:36:20
Puzzle 14/16 - 1:39:45
17. Musical Prodigy - 1:40:55
Wand 15/16 & Puzzle 15/16 - 1:42:20
Ghost 8/8 - 1:43:45
Puzzle 16/16 - 1:44:15
18. Collector & Wand 16/16 - 1:49:20
19. Mechanic - 1:51:50
20.& 21. The Savior & Raw Talent - 1:53:30