What I played of this was fun and charming, though sadly it runs somewhat badly on my potato computer. But some of the statements don't have the argument stated, which makes determining which fallacy was used difficult.
Example: for the statement "Well, eating vegetables won't make you immortal," I marked it as valid as I didn't get the implied argument of "So we shouldn't bother eating healthily." I just read it as a true statement.
Since the game presents the statements out of their imagined contexts, I think it's important that the arguments be stated in full rather than relying on the player intuiting unspoken parts of the argument, especially in hard mode.
Thank you.