Replace the pit with a 3-block-high ceiling. Place sand or gravel above the target’s head supported by a retracting piston. When triggered, the piston retracts, sand falls, and the target suffocates. This awards a hidden sub-achievement: “Gentle Persuasion.”
On the edge of the pit, facing into the hole, place a sticky piston. lovely craft piston trap achievement guide work
Some versions of Lovely Craft require a dual-piston trap (push from both sides). Replace the pit with a 3-block-high ceiling
You don’t want all pistons firing at once — that just crushes the target instantly (which is fun, but doesn’t count for the achievement). You need a delayed chain. Result: When something steps on the plate, the
Result: When something steps on the plate, the first wall closes, then the second, then the third — creating a lovely, squishy, 2-second enclosed prison.