Complete each condition to get the allotted achievements.

Achievement	How to unlock
Completion (easy)	Game completed on easy difficulty
Completion (hard)	Game completed on hard difficulty
Completion (normal)	Game completed on normal difficulty
Crew rescue (level2)	For rescuing 10 missing crew members
Crew rescue (level3)	For rescuing 15 missing crew members
Crew rescue (level4)	For rescuing 20 missing crew members
Crew rescue (level5)	For rescuing 25 missing crew members
Crew Rescue Medal (level1)	For rescuing 5 missing crew members
Grid exploration (level1)	Zone 1 complete
Grid exploration (level2)	Zone 2 complete
Grid exploration (level3)	Zone 3 complete
Grid exploration (level4)	Zone 4 complete
Grid exploration (level5)	Zone 5 complete
Scientific discovery (level1)	Defensive shields
Scientific discovery (level2)	Drone weapons
Scientific discovery (level3)	Ion weapons
Scientific discovery (level4)	Nova bomb
Scientific discovery (level5)	Particle lasers