Guys, you're not going to believe this, and I sure as hell couldn't believe it when I saw it, but just now when we finished the Raid (Normal difficulty), I got not only the Last Word, but also Atheon's Epilogue. This whole time, I thought it would only be achieved on Hard mode, but apparently it is possible that this weapon can be acquired after killing Atheon on Normal. I can't guarantee that it will always happen, but this time it did happen. I did mention also that I got The Last Word, and prior to that I got the SUROS Regime....but nevermind all that; I just wanted to let other Raiders know that it is possible to acquire Atheon's Epilogue on Normal Raids. But, come to think of it....is this old news? Am I mistaking it for some other weapon?.... ....anyway, good luck out there.