what happen i dont complete a missions can i go back later

[elcomesolo]

what happen if i dont complete some of the missions can i go back later and complete

 

[DCR]

Yes. Unless they were in the village in Earthrealm.

 

[the_sim]

Also some of the misions require you to do something before a certain time... like the sick boy, Kung Lao's headband, etc...