It kind of pissed me off that the hint for the secret level was entirely useless (most of the hints in that comment were unhelpful) so I’ll drop this here.
Minimum number of inputs/moves for the secret level31
Encrypted hint: Gurer ner zhygvcyr jnlf gb pbyyrpg na benatr va gur yrnfg nzbhag bs fgrcf, ohg bayl bar jnl gb pbyyrpg na benatr naq n onanan va gur yrnfg nzbhag bs fgrcf.