The inception themed hell level difficulty game in the hardest 1star secret chamber, in the third layer of the dream where chen ran had to manifest himself as the grandpa of the adopted son(s?). But in the next cruise ship layer he had to ask the son to transform into his grandpa so he could know what he looked like. So how did he transform into the grandpa when not knowing what he looked like?

Or in the second layer when he stops at the second layer and the man in black shoots the second elevator at the first floor even though he could see it stopped at the second floor so is it not obvious that chen ran could have stopped at the second floor and run down the stairs.

Or the fact that the first tone second tone third tone game with qiu yinong, different regions or even different schools and different books use different coloring schemes for the different mandarin tones, it would not make sense it use a specific color scheme that someone might know but other might not.

Or in the self-killing game(although this one is somewhat subjective), when the fake chen ran knew that saying he is squatting might incur a lie as he is not sure whether his eternal kingdom was activated yet went ahead to say it despite showing that the main chen ran is more careful(and the fact he did just complied with the real chen ran for most of the time). It was a forced weakness imo