Use the badge description as a clue
The visible badge copy connects the achievement to defeating cats. It does not provide a complete step-by-step requirement or explain what the phrase “at what cost” means mechanically.
Treat the public title and description as flavor and a broad hint, not proof of an exact hidden objective.
Check badge details on Roblox
Open the official experience page and inspect its current badge section. Roblox may display award counts or rarity, but those figures can change and may be presented differently over time.
The page showed the badge as Extreme rarity at the time checked. Do not convert a rarity label into an assumed drop rate or guarantee.
Record only verified unlock steps
Before publishing a detailed achievement walkthrough, reproduce the unlock in game or find an attributable developer explanation. Note the game version and evidence.
No full badge-condition list is available in the public description reviewed for this guide. Unknown steps remain unconfirmed.
Sources
This unofficial guide uses public game information and avoids unverified mechanics.
Related guides
FAQ
What is CAT DEFENSE?
CAT DEFENSE [Alpha] is a Roblox PvE shooter about defending a planet from invading cats.
Where can I play it?
Use the official Roblox experience page linked in this guide.
What do players do?
The public description says to grab shells, load cannons, and work with a crew. Exact controls and round rules should be checked in game.