Lab5, Lab6:
Some ladders were incorrectly placed.
So the player landed on the wall instead
on the other hand.

A little addition for Lab4, Lab8 & Lab9 Castle 2c.
Castle 2c can now no longer be solved before
Castle 1c has been resolved.

The player could easily do in Lab4, Lab8 & Lab9
jump on the plasma walls to Castle 2c and so on
get the sigil.
After a reset, the player could take everything
with him in the same way.
This is no longer possible now.

Uploaded a new update.
A new level has been added.
A few bugs have been fixed, including:

Labyrinth 1:
The star in the middle of the square can no longer be fetched easily.
You have to solve the puzzle.

All levels:
Signs have been added.