Route and failure check
Get the boss low enough, then survive Cataclysm positioning; burrow timing and shield/HP state matter.
Achievements
Everything is Crab It was a dinosaur Achievement Guide
Have the final boss die to the Cataclysm Event.
Cataclysm achievement quick answer
It was a dinosaur asks for the final boss to die to the Cataclysm Event. The route is not pure burst; it is controlled boss HP, survival, shield/HP state, and meteor timing.
The July 8, 2026 hotfix 1.1.2 is specifically meant to fix this achievement not unlocking, so failed pre-hotfix attempts should be retested on the updated build.
Current public confusion still shows up after the hotfix, so first verify the build is current and then confirm the boss actually died to the Cataclysm event rather than before it.
Recommended pages: Cataclysm Final Boss.
Recommended builds
Evidence and verification
The links below support specific dated claims, mechanics, or player-route observations on this page; after a patch, use the current in-game text for exact values.