Complete Level 5 on normal difficulty.

Complete Level 10 on normal difficulty.

Complete Story Mode on normal difficulty.

Complete Level 1 on hard difficulty.

Complete Level 2 on hard difficulty.

Complete Level 3 on hard difficulty.

Complete Level 4 on hard difficulty.

Complete Level 5 on hard difficulty.

Complete Level 6 on hard difficulty.

Complete Level 7 on hard difficulty.

Complete Level 8 on hard difficulty.

Complete Level 9 on hard difficulty.

Complete Level 10 on hard difficulty.

Complete Level 11 on hard difficulty.

Complete Level 12 on hard difficulty.

Complete Level 13 on hard difficulty.

Complete Level 14 on hard difficulty.

Complete Story Mode on hard difficulty.

Kill 1,000 total enemies.

Finish a level without firing any shots.

Finish a level without boosting.

Die to the boss's self destruct sequence on Level 4.

Finish a level without taking damage.

Reach the end of Level 6 or Level 12 without rescuing any Astronauts.

Score 50,000 or higher on Rescue Mode.

Score 100,000 or higher on Invasion Mode.

Score 30,000 or higher on Shield Maiden Mode.

Score 45,000 or higher on Boss Rush Mode.

Kill 20 enemies with one Bomb use.

Kill 400 enemies total with Bombs.

Kill 25 enemies with one Laser.

Kill 500 enemies total with Lasers.

Kill 25 enemies with one Repeat Shot powerup use.

Kill 50 enemies with Rockets in one level.

Kill 1,000 enemies total with Rockets.

Kill 100 enemies total with Shields.

Kill 250 enemy bullets with Shields.

Rescue half of all Story Mode Astronauts.

Finish any level with a time bonus that is over 9,000 points.

Kill 2,500 total enemies.

Kill 5,000 total enemies.

Achieve a combo of 100.

Score 100,000 or higher on Rescue Mode.

Score 250,000 or higher on Invasion Mode.

Score 60,000 or higher on Shield Maiden Mode.

Score 90,000 or higher on Boss Rush Mode.

Rescue all Story Mode Astronauts.

Achieve a combo of 200.