Finish Level 1 and destroy the Boss

Level 2 Complete

Finish Level 3 and destroy the Boss

Finish Level 4 and destroy the Boss

Destroy the Level 5 Boss

Finish Level 6 with at least one astronaut rescued

Finish Level 7 and destroy the Boss

Finish Level 8 and destroy the Boss

Finish Level 9 and destroy the Boss

Destroy the Level 10 Boss

Finish Level 11 and destroy the Boss

Finish Level 12 with at least one astronaut rescued

Finish Level 13 and destroy the Boss

Finish Level 14 and destroy the Boss

Destroy the level 15 Boss

Rescue all 6 of the astronauts in one run of levels 6 or 12

Purchase an upgrade for the ship

Finish a level without collecting any powerups

Purchase the final upgrade of any variety

Destroy 500 enemy ships overall

Destroy 2500 enemy ships overall

Achieve a combo of 50

Miss 50 enemies in one level

Miss 500 enemies overall

Make it to Wave 13 in Invasion Mode

Survive for 180 seconds in Shield Maiden Mode

Rescue 8 astronauts in one run of Rescue Mode

Discover all 12 of the lost astronauts in levels 6 and 12

Find the Perils of Baking easter egg on Level 14

Finish a level without taking damage