Defeat the Twin Fighters.

Defeat the Control Mainframe.

Defeat the Megalithic Gunship.

Defeat the Nuclear Cruiser.

Remember the Proxima Centurai Incident.

Defeat the Senatorial Protector.

Finish a level with 25 health (or less).

Defeat the Terrible Experiment.

Defeat the Mobile Filtration System.

Defeat the Deep Space Drill.

Destroy a boss by boosting.

Defeat the Sorter of Value.

Defeat the Guardian of the Ore.