Dimension of Disaster: Demon Slayer

Delrith Again
Speak to Gypsy Aris. She tells you that you got a future ahead of you, but you tell her that you already know that your future was to kill Delrith. She tells you that you need the Silverlight to kill Delrith. You recall from your first time killing Delrith that you needed a key from Sir Prysin to get the Silverlight. Gypsy Aris now tells you that Syr Prysin lives in a house north-west of the church.

Finding the Key
Go to Sir Prysins house, and ask him about the key you need. He says he had the key, but lost it. Look everywhere in the house, and in the drain on the south side of the house. The last place where you looked is supposed to be where the key is. Now, go to the church, and on the right on the entrance, there is a trapdoor. Go in the trapdoor. You see that the Silverlight is covered by a barrier, without the 3 spirit guardians. Go back to Gypsy Aris, and tell her about this barrier. She will tell you that the guardian spirits have moved on, and you'll need to find them. She gives you a device. The ghosts are located in these locations, and you can visit them in any order you wish to. It is recommended that you go to the Spirit of the Mind ghost last, as it is really close to the church.
 * The first ghost is in the Blue Moon Inn, possessing Dr Harlow.
 * The second ghost is in the graveyard,to the north-west of Gypsy Aris' tent. Inspect the tombstone stack along the north wall.
 * The third ghost is in a house, south of Sir Prysin's home, west of the church.

Spirit of the Body
Go to Dr Harlow and tell him he's possessed. You'll need a potion to sober him up, so the ghost can leave his body. Go to the apothecary and ask if he can make a potion to sober someone up. He tells you that he can, but he needs a cabbage, a rotten tomato and a hair of a dog. He tells you that there is a dog in Gertrude's kennel. Now, go back to the apothecary. He'll take your ingredients and make the potion. Go back to Dr Harlow. If you try to give the potion to him, he'll refuse it. Buy a glass of beer from the bartender. Do not drink the beer, but use the potion on the glass of beer. Then, give the glass to Dr Harlow. The ghost will get out of his body, and Harlow gets angry at you for sobering him up. Talk to the ghost. He'll tell you that he wants you to kill anything in the bar. Anything will work. Kill something. Talk to the ghost again. He's happy, and tells you that his barrier is lifted. You now see a short cutscene of his barrier disappearing.
 * You can get the cabbage south of the Blue Moon Inn.
 * You can get the rotten tomato north of the Blue Moon Inn.
 * Gertrude lives to the south of the western bank, where the Zaros Emissary usually is. Next to her house, you see a kennel. Do every option available except for putting your hand out. You'll get a dog's hair.

Spirit of Faith
Now, go to the graveyard, north-west of Gypsy Aris' tent, and go to the north side. You'll see that you can investigate a stack of tombs. Investigate it. One of the three ghosts will pop out. Talk to him. He tells you to simply take a step to the right. If you ask him if it's your right or his right, he'll tell you he doesn't care. Simply take a step to the left or right, and talk to the ghost. He is satisfied (or bored) and lifts his barrier. Again, you see a cutscene.

Spirit of the Mind
Now, go to the final ghost, south of Sir Prysin's home. You'll see a bookcase moving. Investigate the bookcase. An animated book will fight you. Kill it. The final ghost will appear. He asks you some questions. Answer those questions. After that, he lifts his barrier.

Encountering Evil Dave
You can now go back and take the silverlight. Take it, and go to the south-east part of the city. If you try to go through the barrier, Evil Dave won't let you for not being in his "evil" cult. There are some black mushrooms near. Pick them up, and dye your silverlight black. After that, you'll need the black clothing from Thessalia's Clothes shop. Get some Zemomarks by any means. When you get the full black clothing, talk to Evil Dave. He will let you go in.

Defeating Delrith
Talk to Delrith. You'll find out that he actually wants to be defeated, and go back to Infernus. He'll ask you to simply stab him. Your character automatically stabs him, and gets hit by a bolt of lightning without receiving damage. Delrith tells you that that was Agrith-Naar, and asks you to draw a blood circle. Get a vial, which you can find in the General Store, and fill it by a blood fountain, which you can find north of the Varrock Herald, at the steps up to Varrock Castle. Go back to Delrith. Your character draws the blood circle, and stabs Delrith.

Defeating Agrith-Naar
After this, Delrith disappears and Agrith-Naar takes his place. Agrith-Naar gets angry at you, and wants to fight you. If you're ready, you can accept. If not, you should gear up on some food and possibly armor, if you want. If you're ready, fight Agrith-Naar.

After a bit of fighting, he'll scream "PREPARE TO BE INCINERATED!". If this happens, run away. You can get hit by 4 thousand health. Just run a little distance, and you should be safe.

Then, fight Agrith-Naar again. He will summon 3 lesser demons. These won't attack you, but similarly to a Flash mob, they will stand there and just heal Agrith-Naar. It is not recommended to fight Agrith-Naar in this stage, since your attacks will unlikely go above 150, which is the amount of how much he gets healed.

After the 3 lesser demons are dead, Agrith-Naar should be at around 7000 health or so, after regaining it from something like 3000-4000 health. Fight him. He should scream "PREPARE TO BE INCINERATED" again. As before, just run a safe distance, then fight him. It is unknown at the moment if he summons 3 lesser demons again or not, but players report not having to fight them again.

After you have killed him, go back to Gypsy Aris, and she'll tell you that Delrith wasn't much of a threat anyway. She will still reward you for your troubles.

'''Congratulations! Quest complete!'''

Rewards

 * 3 Quest Points
 * Darklight
 * 300 zemomarks
 * 5,000 Crafting XP Lamp (first play-through only)
 * 5,000 Magic XP Lamp (first play-through only)
 * Access to ingredients for Strength potions in the New Varrock demon camp
 * Two Treasure Hunter keys

Trivia

 * If you answer 0 in one of Spirit of the mind's questions he would have "lost connection"
 * The Graveyard spirit requests your character 'Take a Step to your Right', to which you can reply 'Nothing to do with my Hands and Hips?'. This is a reference to the film The Rocky Horror Picture Show
 * References to the old version of Demon Slayer
 * Sir Prysin and Gypsy Aris are both characters involved in the original Demon Slayer.
 * The drain is a possible location of the key, similar to how Sir Prysin dropped his key down the drain.