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Choose unskilled or unloyal team members for three main assignments - unlocking a door, leading assault teams and creating a force field. This will result in only doctor Chakwas surviving the capture. Complete several other missions after Normandy's crew has been abducted by the Collectors. Don't activate the geth (Legion) found on board of the Reaper. As soon as you've completed that quest begin another one - The Reaper IFF. Recruit the minimal number of crew members required to unlock the Collector Ship mission. Avoid recruiting Zaeed and leave Grunt in stasis after finding him in a pod. How do I unlock the worst possible ending? Before you set off on a final mission make sure to leave at least one soldier behind so that the rest of your crew will stand a chance while defending from the Collectors.
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Confirm that you want to escort rescued survivors to the Normandy and choose someone from your team to do it (NOT a soldier!). Choose Samara, Morinth or Jack to create a force field in the Long walk mission. Choose Miranda, Jacob or Garrus twice to lead an assault team (combat specialist). Choose Tali or Legion to unlock the door (tech specialist). As soon as Normandy's crew has been kidnapped complete Legion's personal mission and then travel through Omega 4 relay (you can't complete any other missions in the meantime). Don't lose Jack's, Miranda's, Tali's or Legion's trust as a result of a failed negotiation attempt during the confrontations (you can prevent this by choosing special paragon or renegade dialogue options). Recruit Legion during the Reaper IFF mission and complete its personal mission. Recruit all potential crew members (not counting Legion) and complete their personal missions BEFORE setting off to find the Reaper IFF. Purchase all offensive and defensive upgrades. How do I unlock the best possible ending?
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