The Darkening of Tristram event in Diablo 3 has officially started and there's a lot of reasons why players have to play the reskinned Diablo. Players will be taken back to the classic original installment. To help you complete the game easily, here's a guide to pets, banner cosmetics, item transmogs and portrait frames.
Banner Cosmetics
The Ogden's Sign and Ogden's Brew are given away as a reward for beating the four main bosses in the Darkening of Tristram. The Butcher can be found in his room in Level 2 where the entrance threshold has blood on it. Meanwhile, the Skeleton King is in his room in Level 3, particularly in King Leoric's Tomb. Be careful not to rush in to the dungeon from Level 3 to 4 because you might the Skeleton King. As for Arch-bishop Lazarus and The Dark Lord, you cannot miss them as the event will not be completed without meeting these two main bosses.
Item Transmogs
The Red Soul Shard legendary gem drops off The Dark Lord. You only need to slot the gem in your helm to get it. It doesn't require you however to wear it. The Butcher's Cleaver on the other hand is a blue piece which you can use with other one-handed axes, swords and maces. The Wirt's Leg is a new weapon that you can create. You can apply this to other one-handed axes, swords and maces.
To get the Wirt's Leg, find The Black Mushroom object upon reaching Level 9. Click on it to yield a Rotten Mushroom. Go back to the Old Tristram and from there proceed to Adria's Hut. Tap the Cauldron to get the Witch's Brew and bring it to Farnham's Corpse. Bring the Drunkard's Debt to Ogden's Corpse, Garda's Letter to Pepin's Corpse and Healer's Prescription to Grisworld's Corpse. The last one will grant you the plan for Wirt's Leg. Go back to Old Tristram, teach it and craft at the Blacksmith. Look for it under the Maces tab.
Pets
To obtain the Butcher pet, you have to complete the Darkening of Tristram on your own with a level 1 character. This will give you the achievement "An Eerie Red Glow Blurs Your Vision" and the Butcher upon finishing it. The Royal Calf pet comes with the Wirt's Leg. Go back to Adria's Hut and find the Wirt's Stash chest wherein this pet can be found.
Portrait Frames
The Classic Demon portrait can be obtained by as a reward from the Protector of Tristram achievement which will unlock after you have taken down 40 unique monsters in the event. At Level 2, you can beat Shadowbite and Rotfeast the Hungry; at Level 3, Madeye the Dead and the Brokenhearted Bangshield; at Level 4, Gharbad the Weak, Snotspill and Backlash the Burning; at Level 5, Bloodskin Darkbow, Foulwing and Shadowcrow; at Level 6, Deathshade Fleshmaul, Bilefroth the Pit Master and Bloodgutter; at level 7, Blighthorn Steelmace, Gorestone and Nightwing the Cold; at Level 8, Firewound the Grim, Zhar the Mad and Baron Sludge; at Level 9, Breakspine, Brokenstorm and Oozedrool; at Level 10, the Flayer, Goldblight of the Flame and Blackstorm; at Level 11, Bluehorn and Fangspeir; at Level 12, Viperflame, Viletouch and Lionskull the Bent; at Level 13, Warlord of Blood, Rustweaver and Witchmoon; at Level 14, Steelskull the Hunter, Grayway the Slayer and Stareye the Witch; at Level 15, the Vizier; at Unholy Altar, Red Vex and Blackjade; and at Level 16, Sir Gorash.
The Classic Angel portrait can be obtained as an reward from the "I Sense a Soul in Search of Answers" which can be unlocked after mustering up all seven Cultist's Page items. Diablo 3: Darkening of Tristram is the limited-time anniversary event of the game which only takes place every first month of the year.
