If you destroyed the Collector Base then the Illusive Man will be incensed and the star behind him will be blue, whereas if you saved the base then he'll praise your decision and the star will be red. Whichever decision you make, you'll go on to the final confrontation then escape in the Normandy, followed by a meeting with the Illusive Man.

Saving the Collector Base is a Renegade action, which will add the Reaper Brain to your War Assets in Mass Effect 3 and slightly improves your chances of a better outcome with the Control ending for ME3.

Destroying the Collector Base is a Paragon action, which will add the Reaper Heart to your War Assets in Mass Effect 3 and works towards the Destroy ending for ME3.Should you destroy the Collector Base or use the radiation pulse instead If available, you should take a couple out of Jack, Kasumi, Mordin, and Tali with you in your squad, as they are weak defenders. When preparing your squad for the final battle, make sure you leave at least one strong defender such as Garrus, Grunt, or Zaeed behind to protect the remaining crew.Select a non-soldier such as Mordin or Tali to escort the surviving crew back to the Normandy. During the Act 3 Collector Base: The Long Walk mission, choose Jack or Samara/Morinth to create the biotic field, and Miranda, Garrus, or Jacob to lead the second squad.During the Act 3 Collector Base: Infiltration mission, choose Kasumi, Legion, or Tali as the Tech Specialist to open the doors, and Miranda, Garrus, or Jacob to lead the second squad.Once the crew of the Normandy have been kidnapped and you've completed Legion's loyalty mission, immediately travel through the Omega 4 relay and don't touch any other missions.Resolve the confrontations between Jack and Miranda, and Tali and Legion, with the Paragon or Renegade option to retain all of their loyalties.Recruit Legion in the Act 2 Reaper IFF mission, then complete their loyalty mission immediately.Before you start the Act 2 Reaper IFF mission, recruit all crew members except Legion and complete their loyalty missions.Buy all defensive and offensive upgrades.

Ensure that you complete the following steps: To earn the best Mass Effect 2 ending you need to put in plenty of groundwork first, as it's crucial that your squad is adequately prepared before you reach the Suicide Mission finale.

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