History going back to 2005 World First Kills
Deaths and Taxes (Shattered Hand US)
Molten Core (Released November 2004): While D&T was a strong guild, the US guild Conquest generally achieved the first kills in Molten Core. The first kill of Ragnaros was by the US guild Ascent on April 25, 2005.
Blackwing Lair (Released July 2005):
Firemaw: World First by Death and Taxes on July 13, 2005.
Temple of Ahn'Qiraj (Released January 2006):
Viscidus: World First by Death and Taxes on March 5, 2006.
Naxxramas (Released June 2006): D&T achieved several world first kills in Naxxramas:
Patchwerk: June 23, 2006
Grobbulus: June 23, 2006
Gluth: June 26, 2006
Thaddius: June 30, 2006
The Four Horsemen: August 25, 2006
Sapphiron: September 2, 2006
2025 ranked #15 on Dreamscythe-Horde