I originally learned Halo CE Legendary speedrunning many years ago to get the Goat Roped achievement. I got it back then, but barely. So, I decided to really try to learn and get good at speedrunning CE and get a time over twice as fast as needed for Goat Roped: 90 minutes.

You can watch my full segmented run without commentary or extra edits here:    • Halo CE Legendary Full Segmented Run  

Chapters:
Intro/Setup 0:00
Pillar of Autumn 3:00
Halo 4:47
Truth and Reconciliation 7:51
Silent Cartographer 11:08
Assault on the Control Room 12:41
343 Guilty Spark 13:58
The Library 16:18
Two Betrayals 17:21
Keyes 18:48
The Maw 19:55
Final Time/Conclusion 20:59

If you're interested in Halo speedrunning, check out Halo Runs: https://haloruns.com/

Other resources:

Halo Checkpoint Manager (HCM): https://github.com/Burnto/HaloCheckp...

Livesplit: https://livesplit.org/

Goatrope's 2014 GDQ run:    • Halo: Combat Evolved by Goatrope in 1...  

GarishGoblin's Tutorial Playlist:    • Halo: CE Speedrun Tutorial  

Naked Eli (RIP):    / @nak3dhalo