Here is the full list of all 29 Eventide 2: Sorcerer's Mirror achievements worth 1,000 gamerscore.
You put the Wolf to sleep
You finished three Minigames in a row without skipping
You completed three Hidden Object Puzzles Puzzles with less than 5 misses in each one
You made the first moral choice in the game
You healed wounded Yagna
You found the first glimmering mirror
You found the first card with Imp
You finished any Hidden Object Puzzle in less than half a minute
You found 3 Hidden Objects in 3 seconds
You got into Tvardovsky's domain
You finished a Minigame in less than 1 minute
You completed an Hidden Object Puzzle without using Hints
Find half of all glimmering mirrors
Find all the glimmering mirrors
Find half of the cards with Imps
Find all the cards with Imps
Finish all Minigames without skipping
Complete all Hidden Object Puzzles without using Hints
Face consequences of your decisions
Get away from the prison cell
Make elixir for Yanosik
Get into Tvardovsky's house
Help the Imp to assemble the necklace
Find proof for Yanosik
Defeat Tvardovsky
Free Jenny
Talk with all Imps in the game
Play the game again and make different choices
Finish the game in Expert mode