WoW Achievements — Browse All Achievements
Track all 8,600+ World of Warcraft achievements. Browse by expansion or category — Dungeons & Raids, Quests, Exploration, PvP, Professions, Reputation, and more. Sync your character to see completion progress.
Browse achievements from all expansions including The War Within, Midnight, Dragonflight, Shadowlands, and Classic. Find guides for Glory of the Raider, meta-achievements, PvP achievements, exploration, and more. Track your achievement points and completion progress via Battle.net.
A Fungus Among Us
Gain 15 stacks of Burning Infusion and then defeat Brackenspore in Highmaul on Normal difficulty or higher.
A Fungus Among Us requires you to gain 15 stacks of Burning Infusion by burning Creeping Moss with a flamethrower, then defeat Brackenspore in Highmaul on Normal difficulty or higher.
Enter Highmaul on Normal
Enter Highmaul and set the difficulty to Normal or higher, then engage Brackenspore. The achievement is not personal, so stacks do not need to be tracked individually per player.
Pick Up the Flamethrower
Pick up a flamethrower that spawns in the encounter area but do not use it yet. Hold it in reserve until Brackenspore reaches around 40-50% health, because Creeping Moss grows faster at lower boss health, giving you more moss to burn.
Wait for Moss to Spread
Allow the green Creeping Moss to cover most of the room before activating the flamethrower. The more moss present, the easier it is to chain burns and accumulate stacks quickly.
Burn Moss in Small Bursts
Walk into the Creeping Moss and activate the flamethrower, burning approximately 3 patches at a time before releasing it. The flamethrower overheats if held too long, so wait until it has 0-1 Overheated stacks before each burst. Press Escape to cancel the channeling safely rather than clicking the button a second time, which could accidentally reactivate it.
Reach 15 Stacks Then Kill Boss
Continue burning patches in short bursts until you reach 15 stacks of Burning Infusion — aiming for 16 stacks adds a small buffer since each stack decays every 2 seconds. The stacks do not need to be active when Brackenspore dies, so once you hit 15 stacks at any point during the fight, finish off Brackenspore to complete the achievement.
Tips
Heroic difficulty spawns 2 flamethrowers and Mythic spawns 3, giving more players access to the flamethrower simultaneously.
Burning exactly 3 patches per burst is the most efficient method for reaching 15 stacks without speed boosts or the flamethrower overheating.