acheivement for completing lvl with plane only

[RudeboyARiot]

Do you need to use the bomber (bi-plane) or the fighter (tri-plane) to get the achievment, or can you use any or both planes ? cheers for any help with this

[Lechimm3]

I know the question is old, but here is your answer: http://www.xboxachievements.com/forum/showthread.php?t=212837
I think you can use both planes, only need "don't construct anything"

[RudeboyARiot]

Thanks for your reply. I've not played the game in a while and not since they got rid of GFWL and changed the achievements to steam ones. I should play it again, if only to get all the achievements i'd gotten when they were on GFWL. Good game though. This particular achievement is really tricky if i remember rightly, i never managed to get it anyway.