Collect 50 powerups to unlock.
Collect 10 powerups to unlock.
Collect 25 powerups to unlock.
Collect 100 ammo boxes to unlock.
Collect 50 ammo boxes to unlock.
Collect 250 ammo boxes to unlock.
Collect 500 ice shards to unlock.
Collect 2000 ice shards to unlock.
Collect 1250 ice shards to unlock.
Get on the leaderboard to unlock.
Top the leaderboard to unlock.
Destroy 250 asteroids to unlock.
Destroy 500 asteroids to unlock.
Destroy 1000 asteroids to unlock.
Survive for 5 min to unlock.
Survive for 15 min to unlock.
Survive for 30 min to unlock.
Travel 2500 meters to unlock.
Travel 12250 meters to unlock.
Travel 25000 meters to unlock.
Get sucked into a black hole to unlock this achievement.
That didn't last long..
Don't press that button!