Complete level 5.
Complete level 10.
Complete level 8.
Complete level 11.
Be a naughty guy.
Complete a level without using the mouse.
Complete level 29.
Complete level 30 with 5 or less instruction lines.
Check the solutions in the settings.
Complete level 30.
Break a level record after the game is completed.
Discover the engineer's diary.
Read all the engineer's diaries.
Use 3 or more signals in a unit's program.
Complete any player level.
Complete level 17 within 30 seconds.
Read all the contents of the help manual.
Listen patiently.
Write 10 or more valid instruction lines for a single unit.
Complete level 20.