What is your target audience? Because it's pretty obvious that this is catering to the WoW generation of players. An achievement for jumping a jeep, spraying 25K rounds, bailing out? Really? Are you kidding me?
Where is the historical content? Where are the historically based ranks (not shiny stars) (based on actual account lifetime skill)? Where are the medals and ribbons that fighter pilots were awarded (based on single acts of valor)? Instead, what we have is a quick-gratficiation "fix" that does nothing to add to the "aura" and WWII "feel" that this game should be aiming at.
I want to be Major So-and-So, that has the distinguished flying cross and two purple hearts for action over enemy territory during tour XYZ...not whatever you think you are creating.
The achievement system, should be the "long term," record of our achievements and would fill the "gap" that is left after each tour ends (since the tour only keeps "score" for a month). Some of the stuff you have makes sense, such as "Ace," and "shoot down x number of planes," but then award me a ribbon, that is put on my ribbon rack, not this cartoonish crap and star system. Preface each name with their rank, that is based on WWII ranks.
Example, I want to pick Luftwaffe as my main ranking system...I should be Leutnant Olds, or Hauptmann Olds in chat. I want to click on my "awards" tab, and see a ribbon rack, or medal rack that represents medals from WWII. If you are going to do this, do it right, please....not this absurd stars and cartoon achievement stuff.