2 points Do Something in ME2
2 pts etc
1 pts etc
1 pts etc
You need 5 points to get them both armies, I forgot what the points are though I could try to find them again.
I know their loyalty missions are probably involved, rewriting the heretics or not as well as settling their argument in ME2 are among those.
HERE IT IS POST EDIT
-Rewrote the Heretics (0 points)
-Destroyed the Heretics (+2 points)
-Tali is NOT exiled (+2 points)
-Tali has been exiled/You did not do the Loyalty Mission (0 points)
-Resolved Legion/Tali conflict either using the Paragon or Renegade options (+1 point)
-N7 Mission: Save the Admiral on Rannoch in ME3 (+1 point)
-N7 Mission: Destroy Geth Squadron on Rannoch in ME3 (+1 point)
-Completed Legion's Mission in ME3 (or no peace)
You need 5 to 7 in those.
[Edited by ArchDuke, 4/4/2012 2:12:10 PM]
You don't have to. I saved Tali + Geth and I rewrote them. There was some "negative dialog" about how it wasn't the smartest thing to do, but that's all.
It is very easy to get the 5 points without destroying them.
[Edited by Lizml86, 4/4/2012 6:43:11 PM]