Mass Effect 3 Message Board  

Concerning all possible endings and what you need, according to this site, justpushstart.

Collector’s Base Saved

Readiness Rating < 1750 – Earth is destroyed regardless of whatever decisions you made.
Readiness Rating 1750 – Choose to Save the Reapers and the Earth will be saved.
Readiness Rating 2050 – Choose to become a Reaper and the Earth will be saved.
Readiness Rating 2350 – Choose to destroy the Repears and the Earth will be somewhat destroyed
Readiness Rating 2650 – Choose to destroy the Reapers and Earth is destroyed.
Readiness Rating 2800 – Earth and the Galaxy will be saved once you’re able to create synergy
Readiness Rating 4000 – Choose to destroy the Reapers and Save Anderson to see Shepard lives.
Readiness Rating 5000 – Choose to destroy the reapers and not Save Anderson to see Shepard lives.

Collector’s Base Destroyed

Readiness Rating < 1750 – Earth is destroyed regardless of whatever decisions you made.
Readiness Rating 1750 – Choose to become a Reaper and the Earth will be destroyed.
Readiness Rating 1900 – Choose to destroy the Repears and the Earth will be somewhat destroyed
Readiness Rating 2350 – Choose to become a Reaper and the Earth will be saved.
Readiness Rating 2650 – Choose to destroy the Reapers and Earth will be saved.
Readiness Rating 2800 – Earth and the Galaxy will be saved once you’re able to create synergy
Readiness Rating 4000 – Choose to destroy the Reapers and Save Anderson to see Shepard lives.
Readiness Rating 5000 – Choose to destroy the reapers and not Save Anderson to see Shepard lives.

Thought this would help.
(edit link would not work)

[Edited by BuddaBoy, 3/8/2012 9:48:36 AM]

IGN states there is one more endin, which u can only unlock by playing with a new game +