Here is the full list of all 20 Lost: Find achievements.
Pass European L-3
Pass European L-1
After reading the memory fragment: root
Pass the American L-3
When you first enter the game
Pass the 10th Asian level
Pass all European levels
Pass the Asian level 500
Pass all American levels
The information of 12 mice was collected
After reading the memory clip: Creation
Pass the American L-10
Pass the American L-E
Pass the American L-22
Gain golden razor quantity skill
Single turret reset skill times reached 70
Collect all memory fragments
After reading the memory fragment: Destruction
Collect the first mouse information
Pass the level: can't stop fantasy