Complete the following tasks to unlock PlayStation 4 trophy rewards.

Trophy	How to unlock
100 SAUCERS (Silver)	Destroyed 100 saucers.
50 SAUCERS (Bronze)	Destroyed 50 saucers.
ALIEN AUTOPSY (Silver)	Captured 100 live aliens.
AREA 51 (Bronze)	Captured 50 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.