Questions of the Luftwaffe

[joeymeboy98]

1. Did either game have any permanently missable or promotional content?
2. Are both games the same regardless of what platform you get them on, and are there in-game achievements for platforms that lack them? (I know for the original there's a premium & free version on mobile, and that the PS4 version has 9 achievements as opposed to the 45 anywhere else, but I don't know if there's still an in-game equivalent.)
3. Did either game have any bonuses for having save data from a different game?

[Unseen]

What do you mean by different games? Are you talking about the dlc or the other luftwaffe game on steam that's black and white?

[joeymeboy98]

By different game I mean like how if you have Kingdom Hearts: Melody of Memory on the Switch you could unlock a song in Super Smash Bros. Ultimate.