I'm maybe half way through the game, I was hoping I could back to earlier levels and do some easy achievements, but I don't see where I can do this...can I do this after I finish the entire mode?
I posted this in the PC board too, hoping to get a quicker response here
Is it harder? Do you get a hard/vetern option? I know survival is harder but it would be great to go through Adventure Mode again with a harder difficulty....anyone?
On the PC Adventure mode has two playthroughs, the second time you go through it's automatically harder and you get two new zombie types.
What he said - plus 3 of your seeds are randomly chosen for you.
Although it's only 1 new Zombie type - the Yeti Zombie
Since you get to bring all your seeds with you, replaying Adventure Mode is actually easier despite the fact all levels have an extra flag added to them alongside larger zombie hordes.
Some levels later on can prove to be tricky depending on how kind or unkind Dave is when choosing those 3 seeds.