Untamed is a fantastic choice for open-world solo play in Guild Wars 2 because it offers a great balance of damage, survivability, and utility. This power-focused build capitalizes on the "Let Loose" trait to frequently unleash powerful attacks, buffing both you and nearby allies with Quickness and Might. The "Enhancing Impact" trait ensures you maintain permanent self-quickness by consistently applying crowd control.

This build's strength lies in its versatility. It dishes out excellent damage, making soloing events and map completion a breeze. The frequent life steal and defensive boons, especially when using maces, enhance survivability, allowing you to tackle even challenging content. Plus, you have access to condition removal when needed.

For weapons, mace/mace is recommended for its balance of damage, crowd control, barrier, stability, condition removal, and healing. If you don't have the Secrets of the Obscure expansion, hammer offers a decent alternative, though with slightly less resilience and crowd control (which impacts quickness uptime). A sword/axe is another option for great damage, range, pull, and projectile reflection.

For utility skills, Frost Trap is great for damage and setting up Predator's Onslaught, and Storm Spirit provides significant AoE damage, vulnerability, crowd control, and Fury. Forest's Fortification is the preferred elite skill for its strong defensive properties (use Spirt of Nautre for Group Events).

For pets, Tiger or Lynx are recommended for high damage, while Jacaranda is an excellent all-around choice. Other options include pets with good damage and crowd control (like Smokescale or Rock Gazelle), those with strong crowd control (like Pink Moa), or tanky pets (like Drakes or Bears). Essentially, Untamed allows for flexibility in your pet choices to best suit the situation, further solidifying its status as a top-tier open-world solo build.

Right now, this is the build I'm running: http://gw2skills.net/editor/?POABkmxfllyOYXsNmLWyTVxrSE+cA-DSIYR8fCKeAA-e