After the Cerberus HQ mission only the newly unlocked Solar System will be available on the galaxy map.īefore starting Priority: Earth #2 main quest. This restriction is about exploring the galaxy for new resources, intel data and rare artifacts. This restriction is only about meeting with certain characters on the Citadel, using the Spectres office and finishing side quests, because you can shop even after the Cerberus HQ mission using a terminal located on the Normandy. The only exception are the multiplayer co-operative missions. As a result you should read the contents of the table seen below very carefully, so that you'll find out when is your last chance to perform certain types of activities.īefore starting Priority: Cerberus Headquarters main quest.Īll side missions (including the ones provided by the DLC's) become blocked. For example, you won't be allowed to visit the Citadel anymore in order to meet with NPC's, shop and complete side missions. Starting two final missions of the game, named Priority: Cerberus Headquarters and Priority: Earth #2, automatically blocks access to some of the other functions of the game.