Ok, so a couple things.
Firstly, the build. The metabattle build as given is pretty bad. It’s generally right, but missing a lot of the key elements that make the build work well. In general, take metabattle builds with several grains of salt.
Ether signet is the worst possible heal you could ever use. Every single other heal outperforms it spectacularly. Personally, I prefer mirror for the high uptime on reflects, but ether feast is burstier and will outperform mirror if you always use it with 2+ illusions.
Arcane thievery is a really poor choice. It’s on an very long cooldown and really doesn’t do very much. A much better choice is the condition removal mantra.
You’re already doing this, but dire armor is an awful choice. You should run full rabid armor/weapons, though I prefer to use the dire/rabid mix trinket type. That rounds your hp out around 20k, but keeps your good crit chance.
Perplexity are great runes, but undead are also great and like 50g cheaper, no problem there.
The sigils in the build are horrid. You should have an energy sigil on both sets, at least they got that right. You also need doom on at least one set. I like to put it on my staff. I used to run double doom, but now I take a corruption sigil because the +250 condition damage it provides is so strong.
The last thing to note is that I always avoid taking desperate decoy. It can and will get you killed, by proccing as you use an attack and causing you to get revealed at a really awkward moment. I always take phantasmal fury instead, purely because desperate decoy will kill you.
Ok, so now you’ve got an actually usable build. Let’s look at actually playing it.
Firstly, don’t bother trying to use this in a Zerg. It’s not worth the time and effort. If you want to Zerg, go for a power based setup, as glassy as you feel comfortable with, and use that instead. Better yet, hop onto a staff ele and be actually useful, it’s a nice feeling.
This build works great for roaming, both solo and in a party, so use it for that only.
Regarding camps, you really shouldn’t be having trouble with them. You’ve got enough toughness and healing that they won’t do a whole lot of damage to you as long as you don’t eat hits from a supervisor with flames. Flipping them quickly requires a bit of technique though.
Badically, you’ll want to LoS them all into a tight pack, then hit them with torch 4, a full shatter or two, and chaos storm. That’ll mostly kill the 4 minor guards, then you can kill the supervisor. Keep in mind that once you engage the scouts, they’ll cast a pulsing pbaoe blind that will make you completely useless if you stand in it, so don’t stand in it and focus on killing them first. Clones for shatters should not be put out slowly. You don’t have to worry about getting all your shatters to 3 clones. Instead, aim to make one clone from a skill, then a dodge clone, then shatter immediately. Doing that allows you to do shatters without any setup time.
I mentioned LoSing the guards. Every camp has a best spot to do this in, except NW camp which is just annoying. For SE, pull the guards behind the supply hut, and pull them around the corners of the hut for a tight pack. In SW, use the little house that’s in front of the camp and to the left of the path as you’re coming in, and do the same thing. In NE, you can pull all the guards except the supervisor around the left corner of the big rock as you’re entering the camp, then do the supervisor alone. North camp can be pulled easily when you enter it from the east, and LoS the guards to the left corner of the house just behind the supply hut. For NW camp, just sorta try to LoS alongside the walls a bit, but you’ll have to spread out a little more for that camp.
