Ion Assault HD

Complete the single player campaign.

Complete the cooperative campaign.

Destroy five asteroids at once.

Complete a stage without collecting a Power-Up.

Finish a stage in less than 60 seconds.

Score 1,500,000 points in a single game.

Survive 3 stages without dying once.

Destroy 50 big obstacles in a single game.

Score exceeds 1,000,000 points (Survival).

Score exceeds 2,500,000 points (Survival).

Score exceeds 5,000,000 points (Campaign).