Is there a way to get both The Truth and The Killer?

[Spineless Coward]

I'm trying to get all the achievements and the last one I need is to complete the mission Jackson: The Truth.

During my playthrough however, I picked Rooke: The Killer, and now I don't see any option when I replay the mission just before to pick the other one.

So my question is, is there any way to pick "The Truth" without resetting the whole game?

[Robly18]

No. Reset it, dude.
Look on the bright side, you get to play this all over again.

[Spineless Coward]

Oh well. Goodbye all my A+ ranks... And thanks for the answer!