Finishing the first class first time.
Reviewing all word files of Museum
Clicking locked classes multiple times
The Player look into the lens of telescope
Perfectly completing the flying mission without touching the space elevator
The player finds L&D's office desk
The player did not activate the elevator within 180 seconds.
The player put on the helicopter's helmit successfully.
Finishing the first class second time.
Finishing the first class five times.
Once the player obtain all Achievement!