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！