Mystery Castle! A second attempt to find out its secrets. Let's Explore DCL 22

I come back again to the mystery castle and see if I can figure out the puzzle and get to the treasure ...

Check out my blog:
@vincy

I'm also on DTube:
https://d.tube/#!/c/vincy

Visit my other YouTube channel:
https://www.youtube.com/channel/UC-NJsND5JVVng-NhJU1IB3g