I have a minor update to the Heroic SV guide, it's minor but it does allow you to skip 2 sets of mobs, and of course, stealth running is about skipping as much content as possible to clear bosses!
The mobs skipped are the ones before the 2nd boss Mekgineer Steamrigger, rather than clear them, you can stealth over to the left side as you cover over the bridge, in the area there is a water mote (probably only engineers will notice this)
Easily done, i'm reposting the whole guide since i am in blog format, and i can't just update the old strat and write (New) next to the post like you'd see on a normal strategy site.
In the endeavor for badge gear the Coilfang instances have become the most popular as we can really speed run through them, our record for H SV is just under 15 minutes and this was before we skipped those 2 groups of mobs before the 2nd boss.
We've also been able to 4 man the last boss Warlord Kalithresh so as our gear improves our runs become easier.
Here's the slightly updated H SV guide
requires Cenarion Expedition honored - Reservoir Key
Stealth to the first boss (Hydromancer Thespia) be aware that the Bog Giants in here have stealth detection, on the ramp outside her room, clear the patrol, it consists of 2 Coilfang Sirens and a Coilfang Warrior. I find it safest to Sap 1 Siren and the Warrior first, sap them a little more then halfway up the ramp as the Sirens can fear. Burst down the first Siren quickly making use of stunlocks and do the same on the 2nd Siren, finally killing off the Warrior.
Hydromancer Thespia is not a difficult fight, the main thing the group has to be aware of is getting out of her lightning cloud as it does a large amount of damage.
Hydromancer Thespia has 2 elemental adds, its best to mark the adds, have the tank get agro and the dps burst down one add then the other, the healer can also cyclone the 2nd add (after the tank gets some agro on it) to reduce the amount of damage, with a decent group I find the first add goes down quickly and can pick up the 2nd add just after it comes out of cyclone.
As long as the DPS know to get out of the lightning clouds asap (you can see them forming over your head before they start doing dmg) then the fight is easy. Remember to click on the console after the boss is down. DPS can then stealth to the 2nd boss, or swim.
There are 2 groups of gnomes before the 2nd boss, you can safely stealth past both groups and to the left side of the bridge, usually you will see a water mote floating around this area. The boss can safely be pulled to this area without pulling the 2 groups of gnomes.
Mekgineer Steamrigger has 4 gnome adds at the start. We usually assign all DPS to help kill the gnome adds at the start, once the adds are down, we assign one dpser to kill the additional adds that come out (usually the most geared rogue) leaving the rest of the dps to focus on the boss, if your DPS assigned to adds is not geared enough, have a 2nd DPSer give him support if needed. The boss doesn’t do a lot of damage, the main thing is managing the adds and making sure they don’t heal the boss. Remember to click on the console when the boss is down.
Warlord Kalithresh is the final boss in Steam Vaults and there is no need to clear out the adds in his room. Stealth to the back of the room, here you can safely eat/drink/buff. Remember in this fight to DPS the fish tanks as soon as they are up, a lot of guides say he enrages after 10 seconds of channeling from the tanks, but I’ve seen him turn red many times from the first second, not sure if this is a change, a bug, or he’s just turning red and not enraged, I also know if he does enrage, and the healer and tank have decent gear, the healer can keep the tank up. Warlord Kalithresh needs to be DPS’d down quite quickly, from experience there are 3 fish tanks he can go to without any problems, so the tank will need to position himself closer to those fishtanks, so the boss doesn’t go wandering off to a fishtank with mobs, I have had him go to a 4th fish tank without aggroing other mobs in the room before, but I would advise to dps him down as fast as possible