I finally grabbed all of the achievements in 1942: Joint Strike! I got all but one of them when the game came out, but the achievement for beating it on the hardest difficulty has eluded me until today!

There's a great guide on x360a.org with 1-UP locations and boss weak zones

http://www.xbox360achievements.org/game/1942-joint-strike/guide/

And a pretty mighty youtube video

http://www.youtube.com/watch?v=H40kNrsSVKM

You pretty much have to get an "S" rank on all of the bosses that you have enough points to get enough 1-UPs to survive.

I am ranked #207 on the Wing King Leaderboards with a final score of 3,291,050

Good Luck!