This is essentially a repost from a few years back and arguably "intended" but with the recent nerf to demos and huge BUFF to bombs in Strand of the Ancients, figured I would shed some light on the situation. All you need is a level 60+ rogue with access to SotA and Cloak and Dagger - Cloak and Dagger - Spell - World of Warcraft. (And possibly 2 other willing rogue friends for QUICKEST win.) Same concept as Shadowstepping the cannons, (Which no longer works) just cast Ambush on each cannon at each wall till you're at the chamber relic gate, drop bombs for 4,500 damage EACH. Takes 3 bombs in total
(THEORY INC.: Could possibly only have to use 2 bombs and then use an engineering item that deals the remaining 1k health on gate. THEORY END)
Just did this on my rogue going solo, got the first bomb down about a minute in and ran to West GY, which my team had just recently capped. Planted second bomb while my team was downing yellow, giving me access to the bombs inside the courtyard, placing 3rd and final bomb. Took about 3 minutes with no real cooperation from teammates besides GY caps/downing gate
RECAP:
1. Cloak and Dagger your way WITH A BOMB to the final gate when on offence.
2. Drop bomb(s) on gate
3. Right click orb (Or go get some more bombs)
4. Watch opposing team try to finish in 1:30