Under rating threshold (hideshow)
Most of these were stolen from other "Enigma" style games. The ones that were not stolen (at least to my knowledge) were horrible. The "Louder" one failed.
I turned up my Windows volume, turned up my speakers, did everything involving my speakers, and I can't solve it.
Those aren't enigmas anyway. They aren't complex. They are poorly hinted, and the only ones I found entertaining were ones I've already done on other games.