Calamity
Thunder
Calamity Dragon of lightning
Thunder Conqueror
75.9%
Share of all DRAPLINE players who have this achievement.
Small, dark-scaled, lightning-shaped horns. The third of the June calamities.
When this happens
June, Week 4
Boss weeks are the spine of a run. The June fight opens the year, the September fight is the aura deadline, December is the difficulty wall, and week 48 closes DAYS OF TORNADO. Everything between them is feeding and stamina management.
Achievement and unlock rate: Steam Community global achievements, 2026-09-29. Profile text: in-game Compendium, transcribed via the Fandom wiki. No details have been inferred for entries the game does not describe.