Here is the full list of all 13 Syberia 2 achievements worth 1,000 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox 360.
Take Hans to the Patriarch
Get a Youki friend
Use Boris's plane
Enter the dream
Witness Oscar's sacrifice
Find Syberia
Call everyone on the phone
Read what happened to Helena Romanski
Get Candyroff phone number
Finish the game
Talk with every character
Find all the game items
Finish the game in difficult mode in less than 6 hours