This is called the
"Tom & Jerry" Solution
You can do this with
2 players, 3 accounts each.
We did it on a
Free Xbox Live Weekend so we could sign in and play with as many profiles as we desired.
But if you can spare a few 48 hour subscriptions, then go on.
Play with Woman characters at Level 0. You'll need to have 2 of them already created.
So let's suppose Tom & Jerry are boosting:
Tom Main Account
Tom Dummy 1
Tom Dummy 2
Jerry Main Account
Jerry Dummy 1
Jerry Dummy 2
Need to remind that when any profile (Main or Dummy) loses a game, you'll need to change the player for that profile to be able to play again.
We need to get both "Tom Main" and "Jerry Main" to semi finals.
Let's say Tom is going for the cheevo first.
===============================================
Tom Main
vs.==============> Tom Main (Quarters)*
Jerry Main
===============================================
Tom Dummy 1
vs.==============> Jerry Main (Quarters)*
Jerry Main
===============================================
Tom Main
vs.==============> Tom Main (Semi Final)**
Jerry Main
===============================================
Tom Dummy 1
vs.==============> Tom Dummy 1 (Quarters)*
Jerry Main
===============================================
Tom Dummy 2
vs.==============> Jerry Main (Quarters)*
Jerry Main
===============================================
Tom Dummy 1
vs.==============> Jerry Main (Semi Finals)**
Jerry Main
===============================================
Tom Main
vs.==============> Tom Main (Finals)***
Jerry Main
===============================================
Half Way there... From here on it's exactly the same procedure, but for Jerry
===============================================
Tom Dummy 1
vs.==============> Jerry Main (Quarters)*
Jerry Main
===============================================
Tom Dummy 1
vs.==============> Tom Dummy 1 (Quarters)*
Jerry Dummy 1
===============================================
Tom Dummy 1
vs.==============> Jerry Main (Semi Finals)**
Jerry Main
===============================================
Tom Dummy 1
vs.==============> Tom Dummy 1 (Quarters)*
Jerry Dummy 1
===============================================
Tom Dummy 2
vs.==============> Jerry Dummy 1 (Quarters)*
Jerry Dummy 1
===============================================
Tom Dummy 1
vs.==============> Tom Dummy 1 (Semi Finals)**
Jerry Dummy 1
===============================================
Tom Dummy 1
vs.==============> Jerry Main (Finals)***
Jerry Main
===============================================
And the last match
===============================================
Tom Main
vs.==============> Tom Main
(First Grand Slam)Jerry Main
===============================================
Then we do all the same procedure again, but this time Jerry wins the last match so his cheevo also unlocks.