Not only alone but also care about objectives, utility and support.
Pick these talents.
Why?
Because...
Icy Reach, you want to chain from distance as much people as possible.
On a Pale Horse, you want to mount fast.
Reaping, you want those 4 chains in a row after getting into melee combat and spreading twice.
Wandering Plague 1/3, you want to keep opponent away from capping and getting rogues out of stealth.
I won't comment gear too long in here, but caps are important.
Pick somewhat 1300 resilience, without gemming any yellow gem.
Meta gem should be 15 Stamina and 15% reduced stun duration.
One piece of gear that I personally value the most is the Key to victory. Combine it with Runic Healing Injector.
Race? It's not a race against time, we all have plenty of it left.
Pick Bloodelf.
Combine Arcane Torrent with Global Thermal Sapper Charge for maximum utility against healers, or casters of any kind.
Playstyle?
Stay far away, hide behind objects, grip & gnaw, silence, spread diseases if you must, use every possible def ability but time it right.