I know it only just came out but I want to play this with my brother. Does the second player have enough to do to keep them interested? Would it be better to switch who controls player one every hour or so? There doesn't seem to be much info on this or I'm not looking hard enough.

@ulquiokani: I think player 2 just controls the firefly guy, which definitely always does something, but I can see it becoming a problem in combat - at first I just put him at an enemy and click the stick to slow him down, but a bit deeper in the game I realised it's much better to move him around and switch him on and off as needed to get the proper timing on iterrupts. At least that is my experience on hard, few hours in.