Problem: The zombie survives with half a heart. Solution: You are using the wrong mob. Spiders and skeletons have smaller hitboxes post-patch. Use a Zombie or Husk exclusively.
Problem: The piston pushes the boat, but the zombie floats out. Solution: The 1.21.30 patch changed boat collision. You need to place a block of honey on the wall facing the piston. Honey blocks prevent mobs from dismounting boats during redstone events.
Problem: No achievement pops, but the zombie is dead. Solution: The zombie died of suffocation in the wall, not piston damage. Shorten your repeaters to 1 tick each (total 2-tick pulse). The piston needs to retract while the zombie is still inside the block. lovely craft piston trap achievement guide patched
For the uninitiated, "Lovely Craft" (often confused with the Java achievement "Kill a Mob with a Piston") requires you to kill a hostile mob using environmental damage caused directly by a piston pushing a block.
Important distinction: You cannot simply push a zombie into lava or off a cliff. The kill credit must go to the piston itself. This is tracked internally by the game as piston_entity_collision_damage. Problem: The zombie survives with half a heart
This design is silent, cheap, and works on Vanilla, Paper, and Spigot servers as of the latest patch.
You will need:
If the achievement does not trigger, verify the following common errors introduced by the patch:
Problem: The zombie survives with half a heart. Solution: You are using the wrong mob. Spiders and skeletons have smaller hitboxes post-patch. Use a Zombie or Husk exclusively.
Problem: The piston pushes the boat, but the zombie floats out. Solution: The 1.21.30 patch changed boat collision. You need to place a block of honey on the wall facing the piston. Honey blocks prevent mobs from dismounting boats during redstone events.
Problem: No achievement pops, but the zombie is dead. Solution: The zombie died of suffocation in the wall, not piston damage. Shorten your repeaters to 1 tick each (total 2-tick pulse). The piston needs to retract while the zombie is still inside the block.
For the uninitiated, "Lovely Craft" (often confused with the Java achievement "Kill a Mob with a Piston") requires you to kill a hostile mob using environmental damage caused directly by a piston pushing a block.
Important distinction: You cannot simply push a zombie into lava or off a cliff. The kill credit must go to the piston itself. This is tracked internally by the game as piston_entity_collision_damage.
This design is silent, cheap, and works on Vanilla, Paper, and Spigot servers as of the latest patch.
You will need:
If the achievement does not trigger, verify the following common errors introduced by the patch: