Haunted Humanoids

Use Dandelion Frolicker (Scratch, Scratch, Scratch, Dazzling Dance), Grumpling (Gift of Winter's Veil, Snowball), and Squirky (Bubble, Stampede, Dodge). Open with Dandelion Frolicker spamming Scratch until his first pet dies, then use Dazzling Dance before Dandelion Frolicker falls. Bring in Grumpling to handle the second pet with Gift of Winter's Veil and Snowball, then finish with Squirky. This strategy works consistently as long as none of Dundley's pets land critical hits.

Bring two Kun-lai Runts (abilities 2-2-2) and a Sister of Temptation (abilities 1-1-1). Open with Frost Shock, then Deep Freeze on swap, then Frost Shock again, swapping between the two Kun-lai Runts each cycle to maintain the freeze rotation. Finish off Rocko using a freeze and the Sister of Temptation's abilities.

Use Ranishu Runt (abilities 1-2-2), Peddlefeet (abilities 2-1-1), and Anubisath Idol (abilities 1-1-1). Round 1 use Swarm of Flies, round 2 Call Lightning then Runt dies. Bring in Peddlefeet: use Lovestruck, let Shot Through the Heart charge and fire, then spam Rapid Fire until Peddlefeet dies. Bring in Anubisath Idol: use Deflection, then Sandstorm to cancel Arcane Winds (you need several misses of Mana Surge), then Crush twice to finish the remaining pets, followed by Deflection for the second death.

Use Anubisath Idol (Crush, Sandstorm, Deflection), Wretched Servant (Nether Blast, Weakness, Wild Magic), and Flayer Youngling (Triple Snap, Deflection, Rampage) as a backup. Open with Sandstorm, Deflection, then three Crushes, Deflection again, then Sandstorm as Ash dies. Crush three more times until Anubisath Idol dies, then swap to Wretched Servant and use Wild Magic, Weakness, Nether Blast twice as Fang dies, then Weakness followed by Nether Blast until Swarm is defeated.

Defeat the remaining Shadowlands Master Tamers with a full team of level 25 Humanoid pets to reach the required total of 9 tamer victories for the achievement.