There is a very difficult hidden level in "Double Shadows" that is considered to be a very exquisite easter egg set by the producer. The way to trigger the hidden level is to slide quickly through the elevator next to the boss in Chapter 6 Isolation - the highest security level.
How to trigger hidden levels with extremely difficult dual shadow wonderland
In the sixth chapter of Isolation - the highest safety level in "Double Shadows", slide down quickly through here before defeating the boss.
During the sliding process, there will be a sign on the door that players need to pay attention to, SKOTOS and 1100101101, prompting that this is the hidden level and how to enter.
Follow the numerical prompts, after stepping on the right, right, left, left, right, right, right, left, right, left, right, left, right, left, right, and right in the elevator, you will enter the hidden level.
