There are several achievements that I unlocked, then went back to do again in iron man mode after learning what they are/how to get them. After finishing the unlock conditions in ironman though they don't look any different in the progress screen to tell me which ones I have in iron and which ones I have in standard, and I haven't gotten any more bonus points to spend on new characters.
Can achievements only be unlocked once and you just have to figure them out in ironman to get full credit? Am I doing something wrong? It's hard enough trying to unlock them the first time with no hint beyond the title which is usually a pun more than an actual direction. I don't want to have to restart ironman a billion times to discover them all there.