Metal Gear Solid

- Get good at switching back and forth rapidly between first-person and third-person. You'll need it for the first boss battle.

- You'll get tortured at some point in the story. The game has two endings, and whether you give in or not affects the ending. The canonical ending is the one where Snake doesn't give in, if that helps.

- Cigarettes are useful for detecting invisible lasers.

- Always search out an area before moving on. There are a lot of items hidden around that sure, you'll come across later if you miss them, but you won't really want to. The back of the truck at the helipad for your first gun, and a room in the tank hanger for some thermal goggles before you leave it are two examples.

- Chaff Grenades are your friend. Find them. Use them. Love them.