Destroy 5 Rhino spaceships on easy difficulty.

Destroy 1 Mothership on easy difficulty.

Destroy 1 Moth spaceship on easy difficulty.

Destroy 5 Rhino spaceships on normal difficulty.

Destroy 1 Mothership on normal difficulty.

Destroy 5 Rhino spaceships on hard difficulty.

Destroy 1 Mothership on hard difficulty.

Destroy 1 Moth spaceship on normal difficulty.

Destroy 1 Moth spaceship on hard difficulty.

Destroy a Rhino spaceship with a rocket on easy difficulty.

Destroy 15 Rhino spaceships on easy difficulty.

Destroy a Rhino spaceship with a rocket hit on normal difficulty.

Destroy 15 Rhino spaceships on normal difficulty.

Destroy a Rhino spaceship with a rocket on hard difficulty.

Destroy 15 Rhino spaceships on hard difficulty.

Survive for 4 minutes on easy difficulty.

Destroy 2 Motherships on easy difficulty.

Destroy 3 Moth spaceships on easy difficulty.

Destroy 2 Motherships on normal difficulty.

Destroy 3 Moth spaceships on normal difficulty.

Destroy 2 Motherships on hard difficulty.

Destroy 3 Moth spaceships on hard difficulty.

Survive for 4 minutes on normal difficulty.

Destroy 5 Rhino spaceships only using standard projectiles on easy difficulty.

Destroy a Mothership only using standard projectiles on easy difficulty.

Survive for 4 minutes on hard difficulty.

Destroy a Mothership only using standard projectiles on normal difficulty.

Destroy 5 Rhino spaceships only using bomb projectiles on easy difficulty.

Destroy 5 Rhino spaceships only using standard projectiles on normal difficulty.

Destroy a Mothership only using standard projectiles on hard difficulty.

Hit any spaceship 5 times with projectiles you defended using your shockwave ability on easy difficulty.

Destroy 5 Rhino spaceships only using bomb projectiles on normal difficulty.

Destroy 5 Rhino spaceships only using standard projectiles on hard difficulty.

Destroy 5 Rhino spaceships only using bomb projectiles on hard difficulty.

Hit any spaceship 5 times with projectiles you defended using your shockwave ability on hard difficulty.

Destroy 10 Rhino spaceships only using bomb projectiles on normal difficulty.

Survive for 8 minutes on easy difficulty.

Hit any spaceship 5 times with projectiles you defended using your shockwave ability on normal difficulty.

Destroy 10 Rhino spaceships only using bomb projectiles on hard difficulty.

Survive for 8 minutes on normal difficulty.

Deflect 10 projectiles by hitting them with other projectiles on hard difficulty.

Destroy 10 Rhino spaceships only using bomb projectiles on easy difficulty.

Deflect 20 projectiles by hitting them with other projectiles on hard difficulty.

Destroy 6 Moth spaceships on easy difficulty.

Survive for 8 minutes on hard difficulty.

Destroy 6 Moth spaceships on normal difficulty.

Destroy 8 Rhino spaceships with a rocket on normal difficulty.

Destroy 6 Moth spaceships on hard difficulty.

Destroy 8 Rhino spaceships with a rocket on easy difficulty.

Survive for 3 minutes without hitting any spaceships on hard difficulty.

Reach a score of 3000 without taking damage at all on hard difficulty.

Destroy 30 Rhino spaceships on easy difficulty.

Destroy 4 Motherships on easy difficulty.

Destroy 30 Rhino spaceships on normal difficulty.

Destroy 3 Motherships on hard difficulty.

Destroy 8 Rhino spaceships with a rocket on hard difficulty.

Destroy 30 Rhino spaceships on hard difficulty.

Destroy 4 Motherships on normal difficulty.

Survive for 6 minutes without hitting any spaceships on hard difficulty.

Reach a score of 6000 without taking damage at all on hard difficulty.