Originally Posted by Jonman
So, does this mean that to get the Platinum Star, I need to buy all the Ace of Aces DLC levels? They're crazy expensive at 350 space-bucks each.
And also, does this mean that in order to get the 'All Medals' acheivement, I have to get the Platinum Star, so again, I have to buy the DLC to get it?
No, the Ace difficulty is unlocked after beating the game on expert, and that one is unlocked after beating the game on any difficulty.