Originally Posted by squid5580
Ya they do. You keep them for as long as you want/can. Once they are gone they are gone unless you start a new game. But I don't think they come back in a new game other than the 1 you pick for a starter. The only really good one so far is the dead man. His wits and fighting come maxed. Most of them come with pre set skills usually involving guns so you can't train them with blunt or heavy (he is my ticket to NINJA since I gave him ninja). Wits seems to level really slow even with the library. Or maybe since you max stamina drops so fast you can't get it up.
Do they still count for the achievement? or do they all have to be alive?
edit: I just died and the unlocked hero was still there and that challenge was marked complete. I am still on breakdown 1 but it looks like you have to complete a challenge in one run of any mode and it stay completed. It's gonna be uber grindy but it could be worse