To unlock the following Trophies, complete the following tasks:
Unlockable: --- How to Unlock:
100 SAUCERS (Silver) --- Destroyed 100 saucers.
50 SAUCERS (Bronze) --- Destroyed 50 saucers.
ALIEN AUTOPSY (Silver) --- Captured 100 live aliens.
EARTH (Bronze) --- Completed the Earth Levels.
MARKSMAN (Bronze) --- Got 50 skill shots.
MARS (Bronze) --- Completed the Mars levels.
MOON (Bronze) --- Completed the Moon levels.
MULTIPLIER (Bronze) --- Got the x9 multiplier.
SATURN (Bronze) --- Completed the Saturn levels.
SHARP SHOOTER (Silver) --- Got 100 skill shots.
TITAN (Gold) --- Completed the Titan levels.
ULTIMATE SHIP (Bronze) --- Everything maxed out.