EARTH
Completed the Earth Levels

MOON
Completed the Moon levels

MARS
Completed the Mars levels

50 SAUCERS
Destroyed 50 saucers

MULTIPLIER
Got the x9 multiplier

SATURN
Completed the Saturn levels

ULTIMATE SHIP
Everything maxed out

MARKSMAN
Got 50 skill shots

AREA 51
Captured 50 live aliens

SHARP SHOOTER
Got 100 skill shots

ALIEN AUTOPSY
Captured 100 live aliens

100 SAUCERS
Destroyed 100 saucers

TITAN
Completed the Titan levels