10 Video Game Speed-Run Achievements Only Hardcore Players Will Unlock

10. Castle Guide - Ico

The Achievement: "Beat the game within 2 hours."

Though PS2 cult classic Ico can be comfortably beaten in around 5 or 6 hours on a first playthrough - depending on your aptitude at the game's puzzles - pulling it off in less than two hours for the game's "Castle Guide" trophy sure is a pain.

With only 2.1% of players unlocking the trophy, a two-hour Ico speedrun separates the casual fans from the hardcore devotees.

You'll need to have played through the game numerous times to have a chance of getting close to the two hour mark, memorising the map layout and ensuring you can breeze through the puzzles without ever needing to actually stop and think.

Even if you do this and manage to avoid as much combat as possible, though, you'll have to contend with the finicky A.I. for your partner Yorda, whose counter-intuitive behaviours can further slow you down.

Again, though, this is much easier to work with once you've beaten the game a number of times prior.

It's also important to remember that the game's ending and credits account for roughly 10 minutes of play time, so you need to allow for that.

In fact, the only real solace for this tough-as-nails speedrun is that the timer stops if you hit the pause button, so you're able to take a breather and look up a guide if you've forgotten how to solve a puzzle.