Originally Posted by JuSt BLaZe
I can confirm for you guys that you can get this with a 2nd account
(Silver will suffice, no need for Gold). Just did it by myself. Simply start a local Coop-Party and start up or rather "continue" with your game of your main account. Let your 2nd account kill/down by enemies go ahead and revive him/her with your main account, Achievement popped right after I was done. Easy breezy!
Thanks for this. Didn't think about that, so I'll add the info in if the space permits!