Here is the full list of all 44 Niko: Through The Dream achievements.
Complete all puzzles in Chapter 16
Finish Chapters 14-15
Finish Chapters 12-13
Finish Chapters 10-11
Finish Chapters 08-09
Find all the parts of the parchtment scroll in Chapter 09
Find the Teddy Bear in Chapter 09
Find the Teddy Bear in Chapter 08
Finish Chapters 06-07
Find the Teddy Bear in Chapter 06
Finish Chapters 04-05
Find the Teddy Bear in Chapter 05
Finish Chapters 02-03
Finish Chapter 01
Complete Chapter 02 in less than 4'30"
Complete Chapter 04 in less than 4'30"
Complete Chapter 10 in less than 5'20"
Finish Chapters 16-17
Finish Chapter 18
Fully solve Chapter 06 puzzle
Solve all puzzles in Chapter 11
Collect all Diamonds in Chapter 05
Collect all Cubes in Chapter 08
Find 5 cards in Chapter 15
Complete the first section of chapter 07 without dying
Complete Chapter 09 without being seen
Jump into the void from the highest place
Find Niko's Secret in Chapter 14
Find all the parts of the parchtment scroll in Chapter 01
Complete the piano sequence in Chapter 07
Find the Teddy Bear in Chapter 01
Find the Teddy Bear in Chapter 02
Find the Teddy Bear in Chapter 03
Find the Teddy Bear in Chapter 04
Find the Teddy Bear in Chapter 07
Find the Teddy Bear in Chapter 10
Find the Teddy Bear in Chapter 11
Find the Teddy Bear in Chapter 12
Find the Teddy Bear in Chapter 13
Find the Teddy Bear in Chapter 14
Find the Teddy Bear in Chapter 15
Find the Teddy Bear in Chapter 16
Find the Teddy Bear in Chapter 17
Find the Teddy Bear in Chapter 18