Achievement Name: Speed Reader - 25G
Achievement Description: Complete the level "The Library" on Legendary difficulty in 30 minutes or less.
*I chose not to make a Text Guide for this particular Achievement, because the process which you go through in order to unlock this Achievement is too long to effectively explain in a Text Guide to the reader. In other words, you would be better off watching a Video Guide which you can follow along to. The Video Guide provided below is guaranteed to help! Please comment if you have any questions, and let us know if the Guide was helpful. Thank you.*
Notice to people who are still trying to get this Achievement:
I highly recommend doing the Grenade Jump Glitch which is explained in detail in the beginning section of the video. Doing this quick Glitch / Trick successfully causes all of the enemies in the first and second section of the level to de-spawn (as shown in the video). This makes it a lot easier for you.
Also, I highly recommend going for "Speed Reader" and "That Just Happened" on separate play-through's. Once again, it is much easier that way. The strategy for unlocking "That Just Happened" is pretty straight forward. "That Just Happened" requires you to complete "The Library" on Heroic difficulty or higher without dying.
If you're going for "That Just Happened", then I would also recommend doing the same Grenade Jump Glitch which I have done in this video. I hope this helps.
One last thing. While attempting to unlock this Achievement, I would highly recommend that you equip the "Bandanna Skull". The Bandanna Skull allows you to have Infinite Ammo (bullets and grenades).
If you don't have the Bandanna Skull, then I will direct you to a video which is on our first and now older account on YouTube, WarzoneAchievements.
Video Guide (Speed Reader Achievement Guide):
To view all of our Halo: Combat Evolved Anniversary Guides, click here:
Video by: www.Youtube.com/WarzoneGuides
Don't have the Bandanna Skull unlocked? Then skip to 4:44 in the video provided below where an explanation on how to get this skull is shown.