Play for 1 hour total
Play for 2.5 hours total
Play for 5 hours total
Play for 10 hours total
Lieutenant Junior Grade Rank
Lieutenant Rank
Lieutenant Commander Rank
Commander Rank
Captain Rank
Rear Admiral (Lower Half) Rank
Rear Admiral (Upper Half) Rank
Vice Admiral Rank
Admiral Rank
Fleet Admiral Rank
Joint Chiefs of Staff Rank
Survive 5 minutes
Survive 10 minutes
Survive 20 minutes
Survive 30 minutes
Survive 60 minutes
Destroy 50 Migs
Destroy 250 Migs
Destroy 1000 Migs
Kill 25 Boats