Finish the game in hard level
Finish the game at any level
See the star in the sky
See a dead monster
Defeat the fourth boss
Go through the obstacles of the fourth stage
See the mother ship
Defeat the third boss
Defeat the object in the third level
Collect 3 same items
Get 500 stars
Defeat the second boss
Collect 3 different items
Defeat the object in the second level
Get a life item
Defeat the first boss
Defeat the object in the first level