Here is the full list of all 13 Bumbledore achievements.
Destroy 5000 Wasps
Destroy 5000 Ants
Destroy 5000 Fireflies
Destroy 5000 Rhinos
Destroy 5000 Berserkers
Destroy 5000 Ice Bugs
Destroy 5000 Mantises
3-honeycomb complete all levels in Honeyhold Keep
3-honeycomb complete all levels in Wintrus Citadel
3-honeycomb complete all levels in Pollanor Palace
Heroic clear all levels in Honeyhold Keep
Heroic clear all levels in Wintrus Citadel
Heroic clear all levels in Pollanor Palace