Destroy 10 000 enemies.
Finish a stage with your health lower than 5%.
Earn 10 medals.
Rescue 100 people.
Destroy 1 000 enemies.
Destroy the lighthouse without touching it.
Earn 100 medals.
Collect 100 000 stars.
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.
Collect all the cards.
Complete Stage 8 without using power-ups.
Destroy all enemy towers on Stage 5.
