This is a work in progress thread. If there are Halo: CE, Halo 2, or Halo 3 packages. Let me know and I'll update the thread.
Halo: Combat Evolved
Halo: Combat Evolved (V2) By SillyGoose
http://www.mediafire.com/file/7jffd2fo7ppb2wp/Halo+Combat+Evolved+(v2).rar
Halo 2
http://nikon.bungie.org/misc/h2dialogue.html
This only has the dialogues from Halo 2. I'm certain that's not all of them though.
Halo 2 (V2) By SillyGoose
http://www.mediafire.com/file/ambi34pbmmoh9ty/Halo+2+(v2).rar
Halo 2 Anniversary (V2) By SillyGoose
http://www.mediafire.com/file/l3pgh3urp37zxbk/Halo+2+Anniversary+(v2).rar
Halo 3
Halo 3 (V2) By SillyGoose
http://www.mediafire.com/file/qf92wqkv85zb28v/Halo+3+(v2).rar
Halo: Reach
Halo: Reach (V3) By SillyGoose
http://www.mediafire.com/file/g6r95eew46bz55b/Halo+Reach+(v3).rar
Halo 4
Halo 4 (V3) By SillyGoose
http://www.mediafire.com/file/13n7egqcui9dcpa/Halo+4+(v3).rar
Halo 5: Guardians
Halo 5: Guardians (V2) By SillyGoose
http://www.mediafire.com/file/pkw61pcs7nhankh/Halo+5+Guardians+%28v2%29.rar
Disclaimer: I am not the creator of these packs. This thread and these links were made as a one stop area for montage editors, Machinima creators, etc.
Special Thanks: SillyGoose, Bungie.org
All audio, images, and videos are owned by Microsoft, Bungie, and 343 Industries.