Okay, having played all 8 classes to level 80…
There is no way to claim one class is only about one particular way to play. I can build really strong DPS necros. I can build ubertank necros. I can build a pretty solid support necro. That said, I’ll try to give ya some ideas and put them in a kinda ranking from worst to best.
8) Engineer. There is just no way to get around the fact that a class that doesn’t excel at anything is the worst. They can sorta tank with a pistol/shield build except they don’t have enough tricks to hold aggro and keep themselves alive while doing it. They can sorta DPS with grenades except that grenades have been nerfed so far down as to make them one of the most mediocre AoE attacks in the game (but oh, hey, you get sigils now &eyeroll&) They can sorta support with the elixir gun and healing turret and/or kit, but guardians are much better at boons and elementalists are much better at healing.
7) Necromancer. This class is ranked this low not because they’re bad, but because they’re broken. Minions flat out don’t work with anything resembling reliability. As that’s one of the unique mechanics of the class, that’s a pretty big thing to have broken. That said, necros can tank like champs. You can build a toon that effectively has three health bars to work with, self heals constantly, and can provide combo fields for teammates. Necros can also provide solid condition damage via posion and bleeding which they have to problem at all stacking.
6) Thief. At this point, the rankings are getting way into the but…but…but… part. Thieves are the masters of trashing other players in 1v1 and most mobs veteran and below. The problem is that anything that can survive the burst is a huge problem for a thief. Now, you can build a condition thief that is much more capable of winning fights against tougher enemies, but playing a condition thief is likely one of the trickiest endeavors in the game. You can’t really take much damage so you’re dependent on your own use of dodging and stealth to survive and every fight becomes about attrition so those skills will be put to constant use.
5) Mesmer. Seriously, ranks 3-6 are more a muddle mass than really one class all that much better than the others. A sword-pistol clone spam mesmer can tank like you wouldn’t believe by keeping clones in the face of their target for an entire fight. Those clones also stack vulnerability so hey, bonus. A phantasm DPS mesmer can spit out a lot of damage as can a mindwrack shatterer. Lots of options here, and the mesmer is pretty good at all of them.
4) Ranger. My personal fav w/ caveats. The biggest caveat is that ranger melee pets have accuracy ‘issues’. The pets have some cool big attacks but those attacks often get fired off at enemies that are out of position for them to work on. Even with that, the pet’s ability to tank while the ranger kites makes this the most solo friendly class out there. Rangers also have an awesome heal ability in Healing Spring which makes them useful to hang out around in WvW or dungeons.
3) Guardian. The kings of tanking GW2 style which means boon/heal spam rather than raw stats. Guardians also make decent enough DPS toons albeit not up to ranger/thief/warrior levels.
2) Warrior. This is likely the closest thing to a completed class in the game. No major power breaking bugs. Lots of room to move around on the DPS-tank continuum. Can fight nearly as well at range as they do at melee. They can even be made to have some solid benefit as support toons.
1) Elementalist. Before the big arcane dodging I win nerf, this class was leaps and bounds better than everything else. Post-nerf, they’re just simply better. No other class can build in as strong a mix of survival and damage in one package. No other class, not even the engineer, has as much flexibility, nor can they make such signficant changes on the fly. Need to heal? Flip to water. Need to boost durability while waiting on cooldowns. Flip to earth. Want to rain down fire on your enemies hiding atop walls. Flip to fire. Want to really, really show off what this class can do? Go dagger/dagger and start changing elements every few seconds creating a ball of non-stop big hits and damage absorption .
But here’s my body – So rez me maybe?