Uhm... Euclid?
- The tunnel entrance is in the garden, not the kitchen. Also, it's hidden under a tile, not inside a wall.
- The tunnel is underground, not above it. In other words, the ladder goes down, not up.
- Said tunnel has a decent length, As such, Euclid/Character will have to walk through the tunnel for a bit before reaching the place where Rose and Leon are. Of course, the latter wasted a good amount of time trying to climb the latter at the exit of the tunnel, but still.