If you meet the requirements but the achievement doesn't unlock, it may be a sync issue rather than a patch:
: There is a small chance to trigger this by using ender beads on the Ender Girl . Forcing the beads to "clip" or fully entering them before using the piston reportedly increases the chance of being teleported to the backrooms for the achievement. Piston Variants : Ball-less Piston : Purchase scissors from the farmer. Black Piston : Purchase black ink from the shop. lovely craft piston trap achievement guide patched
Before the patch, players could simply place a pressure plate, a piston facing a block, and lure a zombie onto the plate. The piston would fire, the block would extend, and the zombie would politely take damage. Not anymore. If you meet the requirements but the achievement
If you are trying to build a specific trap in a custom map (like a "Piston Trap" for a specific secret): Black Piston : Purchase black ink from the shop
“Uh,” she said. “Is it supposed to do that?”