Use the Swingorb to destroy twenty enemies.

Spend 100 Ecto total.

Clear Zone One.

Clear Zone Two.

Clear Zone Three.

Continue (instead of visiting the shop) 20 times.

Destroy 20 purple triangles in Zone Two.

Make a pizza.

Float in front of the business end of a frozen Purpler for three seconds.

Level up and choose a Skill.

Beat the game.

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Hold 20 Muns at one time.

Foil the Plas-amBurglar's heist.

Clear Zone One without killing anything.

Convert 10 ships into your friends.

Beat the game in hard mode.

Beat Zone One three times.

Beat the bonus zone.