Corruptible

A legacy console achievement: the Dryad's world-status check needs to report your world seriously Corrupted - guides put the bar around half the world, so this is deliberate vandalism on a scale the Dryad will resent. Buy Corrupt Seeds during a Blood Moon, spread liberally (hardmode's natural spread plus Unholy Water accelerates it), check with the Dryad as you go - then make amends via And Good Riddance!. Best done on a throwaway world you don't love.