Destroy 1 000 enemies.

Destroy 2 500 enemies.

Destroy 10 000 enemies.

Rescue 100 people.

Rescue 500 people.

Rescue 1 000 people.

Earn 10 medals.

Earn 50 medals.

Collect 100 000 stars.

Collect 200 000 stars.

Save 20 000 stars in your bank.

Use 3 different power-ups in a single game.

Save 5 power-ups at the end of the stage.

Ram through an enemy wave with your Energy Shield.

Destroy at least 15 enemies with one Mega-Bomb.

Burn through 10 enemies with your Laser.

Finish a stage with your health lower than 5%.

Use any 5 power-ups in a single game.

Rescue your friends 20 times.

Rescue 5 VIPs.

Enter the tournament.

Find all the cards.

Collect all the stars from Stage 3.

Complete Stage 8 without using power-ups.

Destroy all enemy towers on Stage 5.