Fixed — Lovely Craft Piston Trap Unlock All Characters

If you updated to version 1.3.1 or later but your save file is from before the patch, the trap may remain bugged. Here’s the manual fix PC players can use:

This forces the game to treat the trap as undiscovered, allowing you to replay it with the fixed logic. lovely craft piston trap unlock all characters fixed

For console players (Switch, PS5, Xbox), the only safe method is to start a New Game+ after installing the latest patch. Your old save may be permanently corrupted for that specific dungeon. If you updated to version 1

For the uninitiated, the Piston Trap is a mechanical hazard found in the "Gearsmith’s Labyrinth" (World 4, Stage 12). It consists of alternating push-pull pistons that can crush your character or launch them into pits. Originally, clearing this stage with a perfect S-rank was required to unlock side characters like Tinker Lily, Gear Knight, and the secret Chrono Mage. This forces the game to treat the trap

However, a desync bug between the piston activation frames and the character unlock flag meant that even after victory, the game often refused to register your success. As of version 2.1.4, that issue is fully resolved.

The Lovely Craft community spent over 400 forum pages trying to brute-force the piston trap. Players attempted everything from frame-perfect jumps to using the game’s built-in “assist mode,” but the unlock condition was tied to a memory address that pistons overwrote. The fix simply moves the character unlock trigger to the end-of-level summary instead of mid-trap.