Achievements:
Easy "I Don't Like Aeroplane Food" achievement:
Avoid the patrolling stewardess hiding in the seats. Hide in a row that
has broken lights or she will see you.
Easy "The Final Countdown" achievement:
Successfully complete the true final Boss section with at least 31 seconds
on the clock to get "The Final Countdown" achievement.
Easy "Unlucky Duckling" achievement:
In the "Fairground Zero" level, you will eventually reach a point where you
will have the choice to go left or right. Go to the right until you get the
"Unlucky Duckling" achievement.
Easy "Welsh Wizard" achievement:
Proceed through the game normally until reaching the last level. Then, change
the language to Welsh, and complete the final level, including defeating the
final Boss, to get the "Welsh Wizard" achievement.