Zerker, Knights or a mixture.
The tiny amount of armor you get from knights will still get you 3shot. Use active defenses like blinds, dodges, blocks, and interrupts instead of stacking toughness
I run 0/30/10/30/0, HGH Rifle+Pure Elixirs. Knight armor and weapons, but Celestial Accessories. Altruism armor runes.
http://www.guildhead.com/skill-calc#mcMM9cz0MogGMMogGM0xax0osmVMaq8kiG7070M7kiG707qGJ70V7ow570m
-Firearms: I take the passive boosts for rifle, you can take the blind or vulnerability on crit if you wish, I prefer having a wider Blunderbuss ability.
-Inventions: I pick up Energized Armor to give me free power for all those points in Toughness you get from Knight’s armor.
-Alchemy: The Elixir traits are just so good, pick up cooldown, condi-removal, and HGH anytime you want to ever use Elixirs.
I believe my build has much synergy and strikes a good balances between tankiness and power. With all your Elixirs conditions will never be an issue with you, letting you stack Knight’s Toughness with no fear of condi-builds. Rifle damage scales great with the Might from HGH as the Rifle Mod train(+10% damage) applies after your might boosts.
Altruism runes are usually bad for most classes, but this build gets so much out of them. Combined with HGH you get 5 Might and 14 seconds of Fury just for healing, your heal is now a power-up as well as a heal. I use my heal freely when I know I won’t take much damage for the extra boost. The Alchemy-25 passive also boosts your damage by 2% per boon you have, the Fury boost from Altruism is another guaranteed 2% without Elixir RNG.
All-and-all I love this build, if you dislike using only Rifle then it can be easily modified to work as an HGH Flamethrower build, I prefer the extra Elixir from being pure Rifle though.
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Did you even read the OP?
If you’re having trouble running the 30/30/0/x/x meta build in full berserker’s, it’s fine to substitute in some knight’s or soldier’s gear until you’re used to it, then gradually change those pieces to berserker’s. That said, you shouldn’t have much trouble against trash mobs if you’re using your blinds correctly. Grenade 3 is a good opener for multiply non-champion enemies, and you can use smoke bomb for continual blinds. Static shot on pistol is also a blind, which bounces between 3 enemies.
For champions and above, where blinds are only 10% effective, you’ll have to learn to dodge large attacks, or block with shield 5, when necessary, as well as other situational means of damage mitigation. A lot of bosses are different, though, and if you don’t know a dungeon’s encounters yet, don’t expect to steamroll through them on your first try in full berserker’s.
using knights gear won’t help you survive. you’ll still get one or two shot and your damaged will be kitten in the process. surviving in dungeons comes from your abilities not gear. when i make or use a build, defensively i always make sure i have a stunbreak, condition cleanse, and extra dodges. these 3 things are always in all of my builds. secondary and optional defensive bonuses are blocks, invulnerability, and invisibility. blinds, stuns, knockdowns, and dazes really help against the nomal-elite bad guys. knockbacks and launches can be utilized if you don’t ruin a stacked up group. i really, really, really hate mesmers or rangers or whatever classes that feel like they have to use their knockback abilities just because it’s not on cooldown.
for example my current pve build is this: http://gw2skills.net/editor/?vcAQJAqelUUpCrtbxELseNiMqQnB6RdBYj4nHvVbBhA-zwBBYfBkEBgKAMzsIasVOFRjVXDT5iIqGA-e
defensively i have everything i need with shield blocks, extra dodges with elixir r, self condition clear with healing turret and elixir gun, and a stunbreaker with regenerating mist. i also support the party through lots of condition cleanse with elixir gun and healing turret, reviving from downed with toss elixir r, and a huge damage boost for the entire party through vuln stacking, while at the same time dealing respeectable damage. i average about 4500 damage per grenade auto and 7500 from shrapnel grenade every 5 seconds. i don’t have any trouble using full zerkers in any dungeons or fractals 50.
i used to run defensive gear but i realized it was just a big waste. learn from my mistakes! don’t waste time or money on defensive stats.