Trophies
There are 5 Bronze Trophies, 5 Silver Trophies, and 1 Gold Trophy.

2 Million Individual Score (Silver): Score 2 milion on any single level.
3 Million Total Score (Bronze): Get a combined total score of 3 million on all levels.
30 Million Total Score (Silver): Get a combined total score of 30 million on all levels.
All the Medals (Gold): Easy! Collect all the medals.
Basic Training (Bronze): Complete the introduction training level.
Cleansed (Silver): Complete all the adventure levels. The blue ones!
Galaxy Explorer (Bronze): Unlock 20 levels.
My First Spacesuit (Bronze): Unlock one of the extra Spacesuits.
UFO (Bronze): Unlock the UFO upgrade.
Universe Explorer (Silver): Unlock all the levels.
Wardrobe Complete (Silver): Unlock all of the extra Spacesuits.