Spent 60 seconds or more in a level
Used undo 5 times in total
Restarted a level for the first time
Completed level 12
Spent 30 seconds or more in a level
Completed level 10
Completed a level containing 4 books
Used undo for the first time
Completed level 8
Completed a level without using restart
Completed a level without using undo
Pushed books 5 times
Completed level 2
Completed 2 levels without using undo
Took 175 steps in total
Pushed books 10 times
Took 50 steps in total
Pushed books 15 times
Completed a level containing 3 books
Completed level 6
Pushed books 20 times
Took 150 steps in total
Pushed books 25 times
Took 100 steps in total
Completed level 4
