itch.io

Could the solution.png have some form of steganography?

The "Look Inside" hint could be referring to hiding data via steganography.

I have tried this WITHOUT a password using this site http://www.mobilefish.com/services/steganography/steganography.php however there was nothing found. But perhaps there may be a password.

Could be a dead end but who knows?

In your original Left end and Right end images w/out the enhancements they kind of look like a digital signal. Try to see if you can get anything out of converting them into binary and translating it.