Well, its living end. But I tried to play a more interactive version with faerie macabre and ingot chewer in the main board. Very good against chalice-, snapcaster- and other decks that also use the graveyard / play extremly good artifacts. In the worst case you get a 2/2 flying for free or a 3/3 for 1red mana. So, why not? Also the main reason I play this deck is fulminator mage which is my favorite creature in Magic.

General: Cycle creatures from your hand / Evoke creatures to interact with the board. Go crazy with Simian Spirit Guide and cast Fulmiantor Mage on turn 2 on the play to destroy the opponents one land.

something fishy: If your opponent does not know what you play: Use a fetchland and/ cycle street wraith and do nothing. They may think its Death's Shadow and will not play around Fulminator mage or something like that in their first turn.

Try to play a spell that cascades into living end when you have enough creatures in the graveyard or when a spell that exiles your graveyard is on the stack or when you have to fear it next turn. Also some decks will be able to put more or bigger creatures in their graveyard, so you have to evaluate when it is worth to living end. Be aware that Demonic Dread needs a target, so maybe you need to wait/ destroy an opponents land/planeswalker with Beast Within at the end of turn then target the token.

Against blue decks it is good to have one red mana open and a ricochet trap or have a way to end of turn Violent outburst and in your turn do it again if the first Living End was countered.

Attack with the creatures on the board. Destroy "what is left": Creatures the opponent playd after living end or Planeswalker with Beast Within. Choose the most efficient way to make one creature unblockable with Demonic Dread and not cast Living End. Be in fear of boardwipes like Terminus or Settle the Wreckage if the opponent has mana open. In game one this is often not such a  big issue as it is after sideboard.

Even though this is a combo deck, it is far from being a one trick pony. If Rest in peace is out, Living End still wipes the board and you just hard Cast our stuff. You have mainboard answers to strange Stuff like Emrakul, the Aeons Torn and can demolish Bogles and all in creature decks like Elves. Your deck is also a #tronkiller with the mainboard 6 card Land destruction package of Fulminator Mage and Beast Within But I am still very unsure what to side in. I can not tell when to expect Leyline of the Void and when I only have to fear Relic of Progenitus / Nihil Spellbomb.