Erect 25 shield walls.

Close-in on Proxima Centauri.

Destroy 50 blocks with targeted explosions.

Receive an unexpected message.

Discover the secret of the missing ships.

Lose all of your lives 10 times.

Earn 1 S-Rank.

Use all of your time on any stage.

Destroy the same amount of blocks with Greetings and Salutations on one stage.

Achieve an S rank on any level.

Discover an alternate route.

Finish the tutorial.