You've defeated the Admiral!
You've defeated N'Kung!
You've defeated Captain Londi!
You've defeated Daniel!
Win a game in one turn
Win a game in three turns or less (AI skirmish or non-private online games only)
Win a game in five turns or less (AI skirmish or non-private online games only)
Complete a private online game
Complete a skirmish game versus the AI
Destroy a Doomstar
Destroy a Minefield
Destroy opponent's Command Ship with a Fighter
Destroy opponent's Command Ship with a Doomstar
Win a game without losing a single unit