Ditto. Got Survivor 10,15 and 25 all in one shot. XBL only shows 15+25 (even though 10 is unlocked in the game).
neeker: if you get a reply, please post it here. Otherwise I'm going to give this game a crappy review. Does anyone know if uninstalling and reinstalling clears the in-game achievements? (I ask because that DIDN'T work in LodeRunner - another glitched cheevo there)