The key object moved next to the spawn, so the key tile painted at cell (10,8) (on top of the crate tile) was left behind and rendered a second key. Cleared it by setting that record's source_id to -1, which is a same-length edit inside the base64 tile_map_data. Also hurt() no longer teleports to the spawn point, it only drains a heart and grants brief i-frames; only dying returns the player to the spawn.
The two new spikes were painted as tiles in TerrainBase, but tileset collision can only make a solid wall, not a damaging hazard. Replaced them with a real spikes_grey prefab that uses the same atlas tile (8,3) plus hazard.gd, and erases the placeholder tile on ready. Also includes the level edits made in the editor (top-left terrain rework).
Player: move/jump (Space), test flight (F, debug builds only). Key: pickup, hold S to aim with live trajectory preview, release to throw, W to warp to the thrown key. Spring bounce. Spikes deal damage. 3-heart health, Z consumes a heal item for +1 heart and a 5s shield. HUD with hearts and item count. Death screen with fade-to-black and restart. Hidden passages. Assets: Kenney Pixel Platformer (CC0).
sijcdu