(Yes, it’s cruel in real life – but in Minecraft, it’s just redstone engineering.)
Once you’ve mastered the piston trap for the achievement, why stop there? The same principles apply to creating a or automatic villager breeder . Use a series of piston traps to separate zombies from creepers, or to trap traders for infinite emeralds. lovely craft piston trap achievement guide better
Also, ensure you’re not in peaceful mode. The achievement requires a hostile or neutral mob (passive mobs like cows work but are less consistent). (Yes, it’s cruel in real life – but