Place the Sticky Piston facing upward. This is the core requirement for "Lovely Craft"—the piston must manipulate the floor level.
A visual bug where multiple achievements would pop at once or block each other has been fixed. lovely craft piston trap achievement guide patched
Achievement Guide & Post-Patch Viability Analysis Status: Patched/Resolved Place the Sticky Piston facing upward
Build carefully, account for the lag on your server (if on Realms, add 1 extra tick to each repeater), and you will add this elusive achievement to your collection. 4-tick total pulse
Sand, gravel, cactus, or vertical piston pushes (all patched). Do use: Horizontal sticky piston, 4-tick total pulse, boat, zombie.