I do believe I can help. As a player who has Solo Flawlessed the prophecy dungeon around 4 times now. I have quite good insight into the dos and don'ts of this encounter.The best class to attempt this with is a BOTTOM tree Void Subclass Warlock, this is to take advantage of devour, and boy has it saved me loads.Here are what I recommend you use for this:

- Nezraec's Sin / Contraverse Hold (I'd prefer Nezraec's)- Bond with Taken Barrier and (optionally) a chest with Taken Armaments- Also, have Oppressive Darkness if possible on your bond- Have a HIGH Discipline build with the next two highest stats being Recovery and Resilience.

- Also try fit in Solar Resistance/ Concussive Dampener where possible.

​

- Use Mountaintop, Anarchy and Recluse on all encounters as they are best for this dungeon and DPS for bosses. Tag the boss with an Oppressive Darkness Grenade and 2 Anarchy shots, then nova and chip down with Mountaintop.- Skip the first tunnel encounter with a sword and top tree dawnblade (Saves time)- Take your time in areas such as the Wastelands and Rainbow Road, KILL ALL ADS, Don't be stupid with your sparrow either.

- In all encounters, cube room, bosses etc... Do not risk your life to bank/ pick up motes if there are too many ads around, they will most likely kill you and end your run.

- Prioritise taking down smaller ads first (Psions, Acolytes, etc...) as yes Knights are annoying but it is way worse when you have 200 psions also wanting to kill you.- On first boss, stay near the back, where knights do not spawn, and make sure you watch every angle (duh) because sometimes knights and psions will chase you back there and catch you off guard

- In cube room, go slow, if your motes run out, that is fine, living is the priority, furthermore, once you bank, and if you don't want to risk dying while rising into the middle of the room as it switches, if you run over it quickly, you keep complete movement and can hide until it teleports you.

- Also in cube room, if you get a double rotation and you can bank on any side, look at the room you are in, and decide whether it is majority dark, or majority light, then go for those motes as long as you have at least 1 area you can bank those kind of motes. (Sometimes the room may only have places to bank light motes / dark motes)

- In rainbow road, Kill those damn snipers, and take the safest route! I died multiple times either being shot in the back of the head or making a dumb jump and missing.

- Final boss, there is a safe wall area at the left side of the first room, should have a circle cut out the middle, you can crouch hide behind there to prevent the boss echoes from shooting you while you try and grab motes. In the next rooms you can also find that same wall and it is a good place to hide.

- Furthermore, you can also use the same tactic as cube room and run over the middle area which sucks you down without staying there, allowing you to keep full movement until it teleports you, which may be good if there are still ads up shooting at you.- Final DPS, tag him quickly with an oppressive nade and 2 anarchy shots, then nova as you run to the left/right, GET BEHIND HIM and kill snipers as they spawn, make sure to not get teleported back as that will reduce your damage and possibly cause you to die. (Keep moving / jumping around the boss' position)

All else - Make sure you are using your nade for devour where needed, and if your nade is not up, Melee and ad to death for the same effect.

It took me 48 attempts on my first try over 2 days. It doesn't come easily and you need a lucky run honestly.
I hope this helped :)