A rather big step down in quality from the already mediocre Secret Files 1: Tunguska. Everything is worse here: The graphics, the story, the music, the puzzles, the characters, and - holy hell - the voice acting! Literally some of the worst acting and voice direction I've heard in my life. You know you're in trouble when you constantly want to gnaw your mouse-clicking hand off while being exposed to yet another lengthy and supremely annoying internal monologue delivered with a warbling vibrato.
And the jokes - don't get me started on the "jokes". The quips in this game are so embarrassingly bad, the fourth-wall-breaking references so completely out of place that they soil the whole tone of the game. Puritas Cordis doesn't seem to be able to decide whether it's supposed to be taken halfway seriously or as a complete farce. Every other character you run into spews nothing but sarcasm at you, and the main character positively oozes sarcasm from her every pore. You can't have coherent dialogue when everybody's sarcastic! Conversations are mostly comprised of annoying drivel that goes on and on a good while after stating the obvious while throwing dead-on-arrival puns in the mix.
Even the puzzles are, for the most part, insane. Gone are the relatively coherent and logical puzzles of the original - You need to be on some pretty heavy medication to come up with the solutions to a few of the crazier brain-benders in here. Avoid if you value your sanity.