Its meant to throw the first-time players around.

The frequency Baker hinted at is on the back of the CD Case.

When Snake asked ARMSTech President Baker what Frequency is Meryl's, he gives a hint. What Frequency is Meryl's?

It's blade from a High-Frequency Blade in the shape of a Katana

Fill in the Blank: "It looks like it was cut by some type of"?

It's possible if you submit to the torture and Meryl would die. But if you choose not to submit, you'd trigger this.

Fill in the Blank: "If you win, you might still be able to save her." To whom Liquid is referring to when he tells Snake if he wins the duel? 

He breaks the 4th wall of reading your memory cards (if you're playing the Original or the GameCube Remake).

"Now let me read your mind....No, perhaps I should say...your past!"

Psycho Mantis can read people's minds, even the minds of the Gamers when he reads them?

It's made from a Shape-Memory Alloy as Otacon said.

The Card Key was actually three keys in one via different temperatures

The Card Key was split into three individual Card Keys

"That weasel of a President says there's some kind of trick behind that key."

When Ocelot Interrogated Snake that he had one Card Key he asked what was the trick behind the Key. 

Otacon felt that Science could've been used for something else, but instead it turns the world upside-down when it comes to warfare and He has had enough of it.

It details an easy subject.

Fill in the Blank: "________ has always thrived on War. The greatest weapons of mass-destruction were created by scientists who wanted to be famous."

"That was not the DARPA Chief! It was____ A member of FOX-HOUND!"

When Vulcan Raven gave Snake a hint as to who the DARPA Chief is, when the real DARPA Chief was already dead, who's the Imposter?

Interesting Tidbit: If Snake dies in the third Torture round, Liquid will berate Ocelot and the game will restart.

As Ocelot will kill Snake outright if they continue to do so.

Fill in the Blank. "Don't even think about using _______, or I'll know!" What Ocelot is asking the gamers not to use what?

It's true. They have a shared history with 0 animosity.

Both the Ninja and Snake have a shared history that ties back to the other two missions Snake took part in, when he asked him, "Do you remember me now?"

Snake, don't you recognize me, Brother? Have I so changed?

The codec call reveals itself.

Complete the Sentence: When Campbell told Snake after Snake asked him who was he talking to, he said, "Snake, you've been talking to..." the Mastermind reveals himself to be Liquid in disguise.

It is optional that during the Otacon ending, Campbell did mention it. But according to the novel, he did mention it after Snake and Meryl got out of the base and Snake met up with Otacon and rescued the hostages.

He found his wife cheating on his brother.

He received a letter from her mother after his brother died during the war.

Both Meryl and Campbell had a DNA test prior to the incident.

How did Campbell find out that Meryl is not his niece but his daughter at the end of the Metal Gear Solid Novel of the same name?

She at first wanted Vengeance, but after realizing that Snake was saving the world, she regretted her actions and in the course of a decade, she finally admitted her mistake and committed suicide with the same FOX-DIE Virus injection in a fit of irony.

The codec call reveals itself during the game.

Was either Naomi a victim of the whole conspiracy by the Patriots for injecting Snake with the FOX-DIE virus, or was it Justified that she was filled with vengeance?

Generic Questions on the Metal Gear Solid 1