Tricks and Treats of Azeroth

Start in Orgrimmar at 53, 78, then work through Kalimdor locations including Razor Hill in Durotar at 51, 41, Everlook in Winterspring at 59, 51, Nozzlepot's Outpost in Northern Barrens at 62, 16, the Northern Barrens location at 49, 57, Ashenvale at 13, 34, Ashenvale at 38, 42, Ashenvale at 50, 67, Ashenvale at 73, 60, Azshara at 57, 50, Desolace at 24, 68, Desolace at 56, 50, Dustwallow Marsh at 36, 32, Dustwallow Marsh at 41, 74, Feralas at 41, 15, Feralas at 51, 47, Feralas at 74, 45, Felwood at 44, 28, Mulgore at 46, 60, Northern Barrens at 67, 74, Silithus at 55, 36, Southern Barrens at 39, 20, Southern Barrens at 40, 69, Stonetalon Mountains at 50, 63, Stonetalon Mountains at 66, 64, Tanaris at 52, 27, Tanaris at 55, 60, Thunder Bluff at 45, 64, Un'Goro Crater at 55, 62, and the Alliance-side locations including Darnassus at 62.2, 33.1, Dolanaar in Teldrassil at 55.4, 52.3, Lor'danel in Darkshore at 50.8, 18.8, Azure Watch in Azuremyst at 48.5, 49, Blood Watch in Bloodmyst at 55.7, 60, Exodar at 59.3, 18.5, Astranaar in Ashenvale at 37, 49.3, Whisperwind Grove in Felwood at 44.7, 29, Talonbranch Glade in Felwood at 61.9, 26.7, Stonetalon Peak at 40.6, 17.7, Thal'darah Overlook at 39.5, 32.8, Farwatcher's Glen in Stonetalon at 31.5, 60.7, Windshear Hold at 59, 56.3, Northwatch Base at 71, 79, Nordrassil Inn in Mount Hyjal at 63.1, 24.1, Shrine of Aviana at 42.7, 45.7, and Grove of Aessina at 18.6, 37.3.

Travel through Eastern Kingdoms visiting Candy Buckets at Hammerfall in Arathi Highlands at 69, 33.2 (use Zidormi), Fuselight in Badlands at 65.8, 35.6, New Kargath in Badlands at 18.4, 42.7, Dreadmaul Hold in Blasted Lands at 40.5, 11.3 (use Zidormi — travel to 48.15, 7.27 first and speak to Zidormi to revert the zone), Nethergarde Keep at 60.7, 14.1 (use Zidormi), Surwich at 44.4, 87.6 (use Zidormi), The Bulwark in Tirisfal at 83, 72.1 (use Zidormi), Brill in Tirisfal at 61, 51.4 (use Zidormi), Forsaken Rear Guard in Silverpine at 44.3, 20.3, The Sepulcher in Silverpine at 46.4, 42.7, Andorhal in Western Plaguelands at 48.3, 63.7, Chillwind Camp in Western Plaguelands at 43.4, 84.4, Light's Hope Chapel in Eastern Plaguelands at 75.6, 52.3, Eastpoint Tower in Hillsbrad at 60.3, 63.7, Tarren Mill in Hillsbrad at 57.9, 47.3, Hiri'watha Research Station in Hinterlands at 31.8, 57.9, Revantusk Village in Hinterlands at 78.2, 81.5, Aerie Peak in Hinterlands at 14.2, 44.7, Stormfeather Outpost in Hinterlands at 66.2, 44.4, Refuge Point in Arathi Highlands at 40.1, 49 (use Zidormi), Iron Summit in Searing Gorge at 39.5, 66.1, Dragon's Mouth in Badlands at 20.9, 56.3, Kharanos in Dun Morogh at 54.5, 50.8, Goldshire in Elwynn Forest at 43.8, 66, Darkshire in Duskwood at 73.8, 44.2, and Farstrider Lodge in Ghostlands at 83, 63.5.

Travel to Outland and visit Candy Buckets in Blade's Edge Mountains at 53.2, 55.4 and 76.0, 60.2, as well as any remaining Outland locations to complete the Outland Tricks and Treats sub-achievement — note that Outland is technically not part of Azeroth but is still required to earn this achievement.